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Personal Project - Make a PCIe 1x Slot Compatible with Longer Cards Linus Tech Tips

Linus Tech Tips@LinusTechTips266K viewsAug 1, 20125:25
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Description

Ever wondered how you can jam a PCIe 16x card like a video card into a PCIe 1x slot? Now you know. Please do not try this at home...

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The video documents a hands-on hardware hack where Linus Tech Tips explores how to make a PCIe 4X (or larger) card operate in a PCIe 1X slot on a home server motherboard. The host starts by outlining the practical goal: to copy data quickly from an LSI 9248 RAID card to a separate drive array without relying on slow internet transfers, and to enable a 4X or higher bandwidth NIC to function in a 1X slot. He explains the constraints of the motherboard, notably that only PCIe 16X slots are available, and that the natural edge clearance in some boards would permit larger cards in a 1X slot. After evaluating several approaches, he settles on a physical modification using a Dremel tool to widen the back of the PCIe slot so a PCIe 4X NIC card can physically fit into a 1X slot, accepting the risks involved with modifying live hardware. The video covers the iterative process: examining options, attempting methods like melting plastic and razor cuts, and finally performing a controlled Dremel cut to create the necessary clearance. Once the modification is completed, the NIC card is installed into the shortened slot, and Linus tests the setup in the server, confirming that the 4X card operates at 1X bandwidth while achieving the requested network throughput. He concludes with a cautious note about safety and encourages subscribing to the channel, reinforcing the DIY ethos of pushing hardware beyond its factory limitations with proper precautions. Overall, the video blends practical problem solving with candid on-camera experimentation, highlighting both the potential and the hazards of hardware hacks, and ending with a successful, albeit hardware-modified, configuration that meets the original objective.

Topics · hardware_hacking · diy · science_technology · computer_hardware

Questions answered

What modification was made to the PCIe slot to allow a 4X NIC card to fit in a 1X slot?
A Dremel-based cut was used to widen the back of the PCIe slot so the 4X card could physically fit into the 1X slot, enabling use at 1X bandwidth.
Did the modified setup work after the alteration?
Yes, the 4X NIC card installed in the modified 1X slot functioned, providing the expected 1X bandwidth and enabling the network adapters to operate in the server.