i have a macbook a2251 820-01949-a 5v stuck with 0.274ma
some measured volt
PP3V3_G3H_RTC=3.3v
PP3V3_UPC_X_LDO=3.3v
PP1V8_SLPS2R=1.8v
PPBUS_G3H=12v
PP3V3_G3H=3.3v
P5VP3V3_VREG3=3.3v
PP5V_S5_LDO=0v
PP20V_USBC_X_VBUS=0v...
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macbook a2251 no power
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Samsung UE32T4302AK
Hello I need help please after installing a New mainboard in the Samsung UE32 tv everything was inverted I tried and flipped the screen from service menu. But I did something with colors . Hello me please screen is green
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hp envy x360 2in1 (la-m024p)
hii all
help please..
need hp envy x360 la-m024p laptop schematic. thanks so much before ..
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HP PROBOOK 640 G5 BIOS
PLEASE BIOS CLEANED FOR HP 640 G5
SN 5CG0209D3M
issue no display no old bios
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LENOVO IDEAPAD GAMMING 3 15ACH6
Lenovo Ideadpad gaming 3 15ACH6
hello, please fix my bios, no display
DC LOAD 0.500 UP 1500 AND DROP O.450 CONTINUOUSLY
here is the board code :
LA-L171P S/N MP24LQ1T
MTM 82K201RSIN
model : ideapad gaming 3 15ACH6...
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HP 16-WF0007TX
hello
The laptop is turned off during the BIOS update and it turns on with the attached BIOS and works properly, but without battery!
If I connect the battery after turning on the laptop, the laptop works correctly with the battery, but when I turn off the laptop, it only turns on again if the battery is removed and the BIOS of the laptop is reset....
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Apple MacBook Pro A2141 16" IC BYPASS
Hi everyone hope all are well
I need a little expert advice on a issue I have and seeing as this forum is full of clever people I thought ask here as you never know.
I recently repaired a logic board 820-01700 which belongs to a 16" 2019 Macbook Pro, however I seem to be missing a component near the T2 Rom chip and is U4730.
The schematics say this chip is (M34128-FCS6_P/T) and it also says there is a bypass for it wondered if anyone come across either the IC or the bypass method.
I suppose it's worth noting googling the part package brings up various...
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Inspiron 14 5430 Bios requested
Hello, I have this Inspiron 14 5430 that refuses to start. Computer charges and reacts to pushing of the power button by lighting up the keyboard. It blinks twice rapidly, then after about a 5 sec pause, repeats the same keyboard blinking pattern again.
I checked and all voltages are present including PCH and CPU. Indeed, the CPU warms up pretty quickly. But the computer does not post.
I suspect this could be either BIOS or EC issue. At this point I would like to see if reflashing BIOS will solve the problem.
Could someone, please take a look at provide rebuilt...
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LG Service menu android app
I had been using wave audio files to play via the headphone jack to an ir led but had difficulty getting the InStop file to light the led, no sign of life when viewing the led through the camera app on my mobile phone.
Anyway, came across this free android app called IR Wave Plus that can utilise a homemade audio jack to ir led lead.
Not limited to just LG either!
A few settings require adjustment but the app itself is rather straightforward.
In settings ensure the slider bar is set to maximum and Force volume to 100% for audio ir blaster is ticked.
...
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HP ZBook Firefly 14 inch G9 - SWAT Lock Help
Here is my info, does anyone know how to remove SWAT lock? Says DeviceFreeze-3472
HP ZBook Firefly 14 inch G9
SN: 5CG3014FGF
M/B SPS: N22219-601
WARPATH-MB-AVARY
6050A3417601-MB-A01
32MB DUMP ATTACHED
Winbond 25Q256JVEN
2217
6146
2C40001...
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PS5 Digital edition EDM-020 CFI-1108B
Hi guys, I do need a working dump of the bios for PS5 Digital edition EDM-020 CFI-1108B, tried to fix my one however no luck, console stuck in safe mode with error code: SU-101312-8.
You can also check my dump in attachment....
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Dell XPS 9365 2-in-1 LA-D781P "No bootable device" and low VCC_CORE
Hello,
currently I'm tinkering with above mentioned broken device. It started with a shorted PD controller. I replaced it and have an open topic on this forum on reprogramming it.
Currently I'm powering it with a bench supply soldered to the battery connector (laptop battery is dead).
This way the device is booting into BIOS and Diagnose mode fine. But when I try to restore the factory image during diagnose the laptop always greets me with "no bootable device".
Looking at the bios the ssd is recognized (shown with type and size in some storage menu). But...
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PS5 EDM-010 board help needed!
Hello Guys!
I recently bought a PS5 with WLOD.
Somebody already worked on it and knocked off some diodes unfortunately.
It can go to safe mode, and boots up perfectly to system aswell. I hear backround music from the controller with earphone and somehow started a game.
I need your help to find / indentify these components to complete the circuit.
What i looking for are circled in pink.
Thanks for your help!2 Photos
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Lenovo Legion 7 16ACHg6 Type 82N6
Hi guys need a working bios. killed by windows update....
Model:Lenovo Legion 7 16ACHg6 Type 82N6
SN: PF366HP7
Mother: NM-D563 Rev:2.0
Corrupt bios GKCN60WW included
Many thanks guys! 🍺...
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Acer E5-771 no power
Hello guys,
I have an Acer E5-771, it doesn't turn on, the voltages 3v and 5v and 1.8v are available
Can you help me find out where is this problem plz ?
Thanks
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Unnecessary post - please delete.
*RESOLVED* - my mistakeLast edited by survivalbloke; Yesterday, 11:40 AM.
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Asus Vivobook X580VD no power
Hello everyone, I am struggling with an Asus notebook that does not boot, I have not detected any shorts so far.
I checked the following power lines
+3VA_EC: 3V
+3VA_DSW: 3V
3VA_DSW_PWRGD: 3V
PWR_SW#: 3V
+3VS: 0 (Is there any problem or is it normal?)
+3VSUS: 3V
+3VACC: 3V
+3VPLL: 3V
EC_RST#: 3V
RAM
P_1.2V_VDD_20: 0V
P_1.2V_VDDP_30: 5V
P_1.2V_CS_10: 0V
P_1.2V_ S3_10: 0V
P_1.2V_S5_10: 0V
P_1.2V_TON_10: 17V
Do you have any indications on where the problem could be? Many...
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ASUS ROG MAXIMUS XII HERO (WI-FI) BIOS
hi,
Ordered the exact bios IC MX25L25673G and download the latest BIOS Version 3001 from the asus. Neoprogrammer detects and reads the bios however when flashing, I receive the following error "Buffer size not equal to IC size". Tried flashing without renaming and with using the asus bios renamer, am I missing something ?
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dag3himb8c0 15-ec2259nf
Thank you in advance.
Unit Powers on, fans rung at full RPM, no post or display. I suspect corrupted bios. old eprom damage
dag3himb8c0
15-ec2259nf
prodid 6P190EA#ABF
SN 5CD230BQCN...
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Euphonic Audio iAmp 300 repair
Hi, i’m trying to repair my Bass amplifier. I shorted cable blew the outputs. I tried and failed a long time ago to replace them and then let it sit for years and now I am working on it again. I think I’ve succeeded this time but I have to replace a circuit protection fuse first before I know . The power supply board in the amp is putting out 76 V and about 16 V. The 16 V seems to be going through a 12 V regulator to power the chips on the amplifier board. The 76 V for the Mosfets is currently blocked by the aforementioned mentioned blown fuse.
The amplifier board has three ics-...2 Photos
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HP Spectre x360 LA-M789P mainboard schematic and/or boardview
Does anyone have a schematic or boardview for this board, please?
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Bios request for da0p5mb56b0 REV B
Laptop is HP 15s-FQ0039NL
Product ID: 81K9BEA#ABZ
s/n: 5CD310GPPM
FEATURE BYTE: 3K6b7K7P7WaBapaqasawb6bCbhcbdUdpdqtPhYm9.aF
i can provide the dumped bios ( that has a power consuption of laptop of 150ma with strange flashes on screen with restarting)
and also a bios that i found online ( that make laptop uses 250ma , without flashes and not restarting)
thank you to everyone can help me
P.S: Eeprom is XMC QH64AHIG...Last edited by Bartoloni; Yesterday, 07:32 AM.
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Acer Nitro VN7-593G dead? dGPU
Greetings,
I have an Acer Nitro that suddenly turned off while I was using it. No lights, no power, stock DC power supply goes into safe mode when plugged, battery connector is also seem to be shorted while the battery is connected. No visible faulty components are on the board.
Narrowing down the issue I found shorted dGPU 1V_VGACORE rail to be a suspect.
Removing PU8510 (and PU8511) seems to eliminate the issue, the laptop is working on iGPU, charging (new battery) is also fine.
Replacing PU8510 or PU8511 did not seem to solve the issue, the same symptoms come...Acer Nitro 15 VN7-593G Schematics & Boradview
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Acer Nitro 15 VN7-593G schematics & Boradview
Acer Nitro 15 VN7-593G Schematics & Boradview...
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Lenovo IdeaPad 5 15ALC05 NM-D701 black Screen
Hello everyone,
I have a Lenovo IdeaPad 5 15ALC05 NM-D701. When I press the power button, the fan comes on, the power button flashes but the screen remains black. The device has a current consumption of 0.7A. I only have a BoardWiever for the device and no schematic. I have already tried to rewrite the BIOS, but the behavior is the same.
I have checked all voltages and everything fits:
PU1901 LV5028RPC - works
PL6202 -5.08V
PL6201 - 3.32V
PL300 - 0.77V
PL2101- 1.8V
PL1901 - 0.77V
PL1902 - 1.8V
PL1903 - 1.21V
PL5601 - 1.10V...
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HP EliteBook 840 G8 hp wolf security removal
i have an hp elitebook 840 g8 that used to belong to a company i bought it second hand it has no password on the bios but after installing windows and connecting it to the internet it get locked by hp wolf security the only solution i found is installing linux on it but when installing windows it get locked after using for a few hours i could not find how to disable it on the bios settings if anyone know how to remove this i attached a bios dump and the motherboard info
[I]CORVETTE[/I]-[I]6050A3217501[/I]-MB-[I]A01[/I] ([I]A1[/I])(1086) L2i have an hp elitebook 840 g8 that used to...
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LG 42LN540V LED Backlight Flickering After Replacement When Connecting The Screen
This TV has been on the wall in our reception area for around 10 years and the other day the backlight failed. You could see a feint picture so we knew the screen was OK. I took the TV apart to get to the failed backlight and inject voltage in to each half of the LED strips to identify which ones had failed and 4 needed replacing. I ordered a set off of Amazon and they arrived the next day.
On fitting the new LED strips I plugged in the TV was blinded by the light!!
[URL=filedata/fetch?filedataid=357626][ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3490560}[/ATTACH][/URL]...
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Richtek RT8205L RT8205M Power Supply Controller for Laptop Computer
The RT8205L RT8205M is a dual step-down, switch mode power supply controller generating logic-supply voltages in battery powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and also features fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current with automatic linear regulator bootstrapping to the PWM outputs. An optional external charge pump can be monitored through SECFB (RT8205M). The RT8205L/M includes on-board power up sequencing, a power good output, internal soft-start, and internal soft-discharge output...
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Richtek RT8205A RT8205B RT8205C Power Supply Controller for Laptop Computer Datasheet
The RT8205A RT8205B RT8205C dual step-down, switch-mode power supply controller generates logic-supply voltages in battery-powered systems. The RT8205A/B/C includes two pulse-width modulation (PWM) controllers fixed at 5V/3.3V or adjustable from 2V to 5.5V. An alternative LGATE1 output LG1_CP can be used for external charge pump (RT8205B). And an optional external charge pump can be monitored through SECFB (RT8205C). This device also features 2 linear regulators providing fixed 5V and 3.3V outputs. The linear regulator each provides up to 70mA output current with automatic linear-regulator bootstrapping...
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Diodes AP21X2SG-13 AP21X2MPG-13 Current Limited Power Switch for Laptop Computer Datasheet
The AP2182 and AP2192 (AP21X2SG-13 AP21X2MPG-13) are integrated high-side power switches optimized for Universal Serial Bus (USB) and other hot-swap applications. The family of devices complies with USB 2.0 and available with both polarities of Enable input. They offer current and thermal limiting and short circuit protection as well as controlled rise time and under-voltage lockout functionality. A 7ms deglitch capability on the open-drain Flag output prevents false over-current reporting and does not require any external components.
All AP21X2SG-13 AP21X2MPG-13 devices are available...
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AP21X2SG-13 AP21X2MPG-13
The AP2182 and AP2192 (AP21X2SG-13 AP21X2MPG-13) are integrated high-side power switches optimized for Universal Serial Bus (USB) and other hot-swap applications. The family of devices complies with USB 2.0 and available with both polarities of Enable input. They offer current and thermal limiting and short circuit protection as well as controlled rise time and under-voltage lockout functionality. A 7ms deglitch capability on the open-drain Flag output prevents false over-current reporting and does not require any external components.
All AP21X2SG-13 AP21X2MPG-13 devices are available...
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Alcor AU6368 USB 2.0 Flash Memory Card Reader Datasheet
The AU6368 is an integrated single chip memory card reader controller specially designed for notebook, hand-held and other PC peripheral devices, which require fewer components for small PCB area. It supports a widely used flash memory card such as CF, MD, SMC, xD Picture Card, MS, MS Pro, MS Duo, SD and MMC. It can be used as removable storage disks in enormous data exchange applications between PC and PC or PC and various consumer electronic appliances.
The AU6368 reads digital content saved on memory card that user captured with the portable device such as notebook, digital camera,...
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MPS NB670 NB670GQ Switch Mode Converter for Laptop Computers Datasheet
The NB670 NB670GQ is a fully integrated high frequency synchronous rectified step-down switch mode converter with 3.3V fixed output voltage. It offers very compact solution to achieve 6A continuous output current and 9A peak output current over a wide input supply range with excellent load and line regulation. The NB670 operates at high efficiency over a wide output current load range. Constant-On-Time (COT) control mode provides fast transient response and eases loop stabilization.
Under voltage lockout is internally set as 4.65V. An open drain power good signal indicates the output...
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Intel Core i7-900 Desktop Processor Extreme Edition Series Datasheet
The Intel Core i7-900 desktop processor Extreme Edition series and Intel Core i7-900 desktop processor series are intended for high performance high-end desktop, Uni-processor (UP) server, and workstation systems. Several architectural and microarchitectural enhancements have been added to this processor including four processor cores in the processor package and increased shared cache.
The Intel Core i7-900 desktop processor Extreme Edition series and Intel Core i7-900 desktop processor series are the first desktop multi-core processor to implement key new technologies:
...
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Texas Instruments bq24745 bq24745RHDR bq24745RHDT Battery Charger IC for Laptop Computers Datasheet
The bq24745 bq24745RHDR bq24745RHDT is a high-efficiency, synchronous battery charger with an integrated input-current comparator, offering low component count for space-constrained, multi-chemistry battery-charging applications. The input-current, charge-current, and charge-voltage DACs allow very high regulation accuracies that can be easily programmed by the system power-management microcontroller using the SMBus interface. The bq24745 charges two, three, or four series Li+ cells, and is available in a 28-pin, 5-mm x 5 mm QFN package.
The bq24745 features dynamic power management...
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Intel i7-6700K i5-6600K i7-6700T i5-6600T i5-6500T i5-6400T i3-6320 i3-6300T i3-6100T Datasheet
The 6th Generation Intel Core processor, Intel Pentium processor, and Intel Celeron® processor families for the Desktop S-Platform are a 64-bit, multi-core processor built on 14-nanometer process technology. The Desktop S-Processor Lines are offered in a 2-Chip Platform and are connected to a discrete Intel® 100 Series Chipset Family Platform Controller Hub (PCH) chip on the motherboard. See the following figure. This document covers the S-Processor Lines for Desktop (DT).
Throughout this document, the 6th Generation Intel Core processor, Intel Pentium processor, and Intel Celeron...
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Texas Instruments TPS51427ARHBT TPS51427ARHBR Dual D-CAP Synchronous Step-Down Controller for Laptop Computers
The TPS51427A TPS51427ARHBT TPS51427ARHBR are dual synchronous step-down controllers designed for laptop and mobile communications applications. This device is part of a low-cost suite of notebook power bus regulators that enables system designs with low external component counts.
The TPS51427A includes two pulse-width-modulation (PWM) controllers, SMPS1 and SMPS2. The output of SMPS1 can be adjusted from 0.7V to 5.9V, while the output of SMPS2 can be adjusted from 0.5V to 2.5V. This device also features a low-dropout (LDO) regulator that provides a 5-V/3.3-V output, or adjustable...
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Renesas H8S/2112 R4F2112 R4F2112R - 16-Bit Single-Chip Microcomputer Datasheet
Renesas H8S/2112 R4F2112 R4F2112R - 16-Bit Single-Chip Microcomputer Datasheet
H8S Family / H8S/2100 Series
Ordering codes:
F2112TE25V F2112BG25V F2112LP25V
The core of each product in the H8S/2112 Group of CISC (complex instruction set computer) microcomputers is an H8S/2000 CPU, which has an internal 16-bit architecture. The H8S/2000
CPU provides upward-compatibility with the CPUs of other Renesas Technology-original microcomputers: H8/300, H8/300H, and H8S.
As peripheral functions, each LSI of the group includes a serial communication...
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Fintek F71868A Super I/O and Hardware Monitor Datasheet
F71868A Super I/O and Hardware Monitor Datasheet
The F71868A which is the featured IO chip for PC system is equipped with one IEEE 1284
Parallel Port, two UART Ports, one 80 port (multi with COM2), Hardware Keyboard Controller, and SIR. The F71868A integrates with hardware monitor, 9 sets of voltage sensor, 3 sets of creative auto-controlling fans and 3 temperature sensor pins for the accurate dual current type temperature measurement for CPU thermal diode or external transistors 2N3906. Others, the F71868A supports newest AMD TSI and Intel PECI 3.0 interfaces and INTEL Ibex...
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Allwinner H5 Quad-Core OTT Box Processor Datasheet
The Allwinner H5 is a highly cost-efficient quad-core OTT Box processor, which is a part of growing home entertainment products that offer high-performance processing with a high degree of functional integration.
The H5 processor has some very exciting features, for example:
• CPU: Quad-core ARM CortexTM-A53 Processor, a power-efficient ARM v8 architecture, it has 64 and 32bit execution states for scalable high performance ,which includes a NEON multimedia processing engine.
• Graphics: The hexa-core ARM Mali450 GPU including dual Geometry Processors(GP)...
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A2485 no image and no backlight after chip transplant on new screen.
Removed the two chips from the broken lcd at 350C and 40 air by properly protecting rest of the area with copper and kapton tape.
Did the same with the new replacement panel.
Reballed the pulled chips and installed on the new lcd panel at 250C and 40 air
I have done few ones before without issue.
The new panel was working before I transplanted the chips. Now the computer turns on and boots but no image/ backlight. (
Anybody face this issue before?
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Fixing a variac with shorted windings
I have an old "Adjust-a-Volt" variac. Shortly after I bought it, it started smoking and now the windings look burned for about 2 inches around the left side. Is it possible to fix this or bypass the shorted windings? I'm not sure how to detect where the bad windings are, except by appearance.
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HP chromebook 14A G5 bios request !
Hello everyone i need bios bin for hp chromebook 14A G5.
ProdID : 7DF07EA
SN : 5CD0427FB3
THANK YOU IN ADVANCE
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Lenovo nm-e911 rev 2.0
Need boardview for restore broken mb.
Schematic would be helpfull too
Thx
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Dell WD19 series LA-G97 LA-G971P EDAZ0 docking station BIOS dumps
One of these is for the 25Q20 chip, one is for the larger 25Q40 chip at the end of the board. These are dumped from a scrap board so I cannot test them, so make sure you back up your original BIOS just in case!
Note that if you are getting fan failed errors even though your fan is spinning fine, it is usually actually a problem with the sensor on the fan itself and not the mainboard or BIOS....
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Asus P8H61-M LX Motherboard Boardview
Asus P8H61-M LX Motherboard Boardview...
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Asus F2A55-M LK PLUS Motherboard Boardview
Asus F2A55-M LK PLUS Motherboard Boardview...
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Asus J1800I-A 60MB0H00-MB0A02 Motherboard Boardview
Asus J1800I-A 60MB0H00-MB0A02 Motherboard Boardview...
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Asus P4S800-MX SE Motherboard Boardview
Asus P4S800-MX SE Motherboard Boardview...
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ASUS Chromebook C200MA Laptop Boardview
ASUS Chromebook C200MA Laptop Boardview...
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Asus X441BA 60NB0I00-MB1010 Laptop Boardview
Asus X441BA 60NB0I00-MB1010 Laptop Boardview...
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Asus ROG-STRIX-RX580-T8G-GAMING D000PIL Boardview
Asus ROG-STRIX-RX580-T8G-GAMING D000PIL Boardview...
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SUS M4N68T-M LE Motherboard Boardview
SUS M4N68T-M LE Motherboard Boardview...
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Asus P5KPL-AM SE Motherboard Boardview
Asus P5KPL-AM SE Motherboard Boardview...
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