Back Panel I/O not working on A88XM Gaming Motherboard

dantefumi

Reputable
Feb 4, 2015
1
0
4,510
Motherboard Back Panel I/O Issue. No power to back panel, but the rest of the board receives power.

Just put together a HTPC, with the following specs:
-MSI Computer Corp. Micro ATX DDR3 2400 Motherboards A88XM GAMING
-AMD A6-5400K APU 3.6Ghz Dual-Core Processor AD540KOKHJBOX
-Sentey® Bxp600-ps Pc Power Supply / 120 Mm Red Bearing Fan / ATX 2.2 / 115-230 V / Single Rail 12v / 1xpci-e+4xmolex+4sata / 78% Efficiency / Over Pow
-Kingston HyperX FURY 4GB 1600MHz DDR3 CL10 DIMM - Red (HX316C10FR/4)
-LG 12X Blu-ray M-Disc Combo Reader Drive with FREE 1pk Mdisc DVD + Cyberlink 3D Playback Burning Software + Cables & Mounting Screws UH12NS30
-Seagate Barracuda HDD Internal Bare Drive 1TB
-Ceton InfiniTV 6 PCIe - 6-channel Internal Cable TV Tuner for CableCARD

Once I installed everything, connected all the power cables, then started the machine, the back panel I/O is not working (i.e. no network RJ45, HDMI, Display port, Audio, USB 2.0, USB 3.0, etc). None of the ports seem to be receiving power. What could be causing this?
 
Solution
The MB uses a 24 pin and an 8 pin power connection. Check that both are fully into their sockets. The 24 pin needs to be locked into the socket by a locking tab. These 24 pin connectors often need to be rocked gently to get them all the way into the socket. If both are properly in and the PSU in not defective then the MB is. In this case I would suspect the Power Supply as the one you have is junk. It is at best a 240-250 w supply.

Dogsnake

Distinguished
The MB uses a 24 pin and an 8 pin power connection. Check that both are fully into their sockets. The 24 pin needs to be locked into the socket by a locking tab. These 24 pin connectors often need to be rocked gently to get them all the way into the socket. If both are properly in and the PSU in not defective then the MB is. In this case I would suspect the Power Supply as the one you have is junk. It is at best a 240-250 w supply.
 
Solution