OSS EB4400 5-SLOT Gen4, Installation Manual, Page: 66 / 70

One Stop Systems
EB4400 (5-SLOT BP) 66
15 Troubleshooting
15.1 Device is not detected or recognized
1. Shutdown the system
2. Disconnect the cables
3. Disconnect the power from the unit
4. Remove the HIB card from the unit and host computer
5. Re-insert the HIB card
6. Reconnect the cables
7. Turn ON the unit
15.2 My PCIe devices are showing UP with a Yellow Exclamation mark
1. Obtain the software / driver from the 3
rd
party vendor.
2. Install or re-install the driver
3. Reboot the system after installing the driver
15.3 No link between host and target cards
1. Check the dipswitches on each card. Make sure the Target card is set to target mode and Host card is set to host mode.
2. Check the Target card is installed in the target slot / upstream slot.
3. Use a validated / certified OSS HIB Cable adapter Gen4 cards
4. Reseat the Cables. Makes sure you are using a Gen4 cables.
5. Swap or replace the host card, target card and Link cables.
6. If you are still having the same issue after replacing the host card, target card and cables, your next step is to replace the backplane
with a known good board or contact Technical Support for assistance.
15.4 Broken OSS-Backplane
1. If you received a brand new DOA (Dead on Arrival) board, please contact OSS to RMA board and request for a replacement.
2. If you have an out of warranty board, please contact OSS Sales team and buy a new replacement board.

Standard warranty is 1 year, unless you have an SLA or extended warranty coverage.
3. If you purchased a second-hand / used board and it is broken, please contact OSS Sales team to buy a replacement.

Note: Purchasing a second-hand / used product is not covered under warranty.
15.5 My PCIe cards are not detected
Both Target and Host cards are linked, the LINK LED on both cards are illuminated and all the LED indicators on the cards are working.
However, the Operating System is not recognizing all of my PCIe cards that are installed on the backplane.
1. Check the Dip switches on the backplane make sure they are set correctly, see photos below for the correct settings.