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It keeps the sdds cool and easy to install. A thick plate covers the sdds to disapate heat.

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PCIe USB 3.0 Card 7 Port, RIITOP PCI-e Express x1 to 7 Port USB3.0 Expansion Controller Card Adapter, NEC Chipset, No Need Power Supply (NOT Compatible 2U Case)
PCIe USB 3.0 Card 7 Port, RIITOP PCI-e Express x1 to 7 Port USB3.0 Expansion Controller Card Adapter, NEC Chipset, No Need Power Supply (NOT Compatible 2U Case)
  • Type: Controller Card
  • External USB Ports: 7x USB Ports
  • Internal USB Ports: 7x USB Ports
  • External Ports: 7x USB Ports
  • Model #: PCET7U3-NEC
  • Item #: 9SIAFMXFTU6703
  • Return Policy: View Return Policy
Limited Time Offer
$41.99
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plug and play, came with everything you need, no drivers

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TROPRO PCI-Express 4X to USB 3.1 Gen 2 (10 Gbps) 2-Port Type C Expansion Card Asmedia Chipset for Windows 7/8/10/Linux/MAC OS 10.14  PCI Express USB C Card(2X Type-C Port)
TROPRO PCI-Express 4X to USB 3.1 Gen 2 (10 Gbps) 2-Port Type C Expansion Card Asmedia Chipset for Windows 7/8/10/Linux/MAC OS 10.14 PCI Express USB C Card(2X Type-C Port)
  • Type: PCI Express to USB Card
  • External USB Ports: PCI Express
  • External Ports: 2 x USB 3.1 Type-C Ports
  • Standard: USB 3.1
  • Model #: UCC001
  • Item #: 9SIAZVYFAG9061
  • Return Policy: View Return Policy
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Limited Time Offer
$39.99
$47.98
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-Plug and play, drivers supplied by Windows 10 worked without further updates -Easy setup, no configuration required -Widely compatible with boards from many eras

Maybe a Necessity if You Have a USB-C on Front Panel Header because no USB 3.2 GEN1 connector on motherboard. The PCI-E 1X to USB 3.2 GEN1 5Gbps 20pin Front Panel Header allows you to connect the USB-C front panel header to your PCI-E 1X slot

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StarTech.com PEXUSB3S4V 4 Port PCI Express PCIe SuperSpeed USB 3.0 Controller Card Adapter with UASP - SATA Power - USB 3 PCIe Card
StarTech.com PEXUSB3S4V 4 Port PCI Express PCIe SuperSpeed USB 3.0 Controller Card Adapter with UASP - SATA Power - USB 3 PCIe Card
  • Type: PCI Express to USB Card
  • Internal Ports: 1 x SATA
  • Standard: USB 3.0
  • Data Transfer Rate: Up to 5.0 Gbps
  • Model #: PEXUSB3S4V
  • Item #: N82E16815158354
  • Return Policy: Standard Return Policy
$69.99
Free Shipping

Brand New & Undamaged in the Box.

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Vantec 5-Port SATA III 6Gbps PCIe x4 Host Card
Vantec 5-Port SATA III 6Gbps PCIe x4 Host Card
  • Type: PCI Express to eSATA Card
  • External Ports: 5 x SATA III
  • Part Number: UGT-ST655
  • Dimensions: 92 x 66 x 22 mm
  • Model #: UGT-ST655
  • Item #: 17Z-000R-000J4
  • Return Policy: Standard Return Policy
$54.99
Free Shipping
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VANTEC 2+1 FireWire 800/400 PCIe Combo Host Card Model UGT-FW210
VANTEC 2+1 FireWire 800/400 PCIe Combo Host Card Model UGT-FW210
  • Type: PCI Express to 1394 Card
  • External USB Ports: PCI Express
  • Standard: 1394A/1394B
  • Data Transfer Rate: 800/400/200/100 Mbps
  • Model #: UGT-FW210
  • Item #: N82E16815287011
  • Return Policy: Standard Return Policy
$54.99
$4.99 Shipping

Plug-n play!

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RIITOP PCIe to Oculink SFF-8612 Adapter SFF-8611 External Graphics Card for GPU Dock, eGPU, NVMe SSD (PCIe x4 to Oculink)
RIITOP PCIe to Oculink SFF-8612 Adapter SFF-8611 External Graphics Card for GPU Dock, eGPU, NVMe SSD (PCIe x4 to Oculink)
  • Type: PCI Express Controller Card
  • Model #: PCE4XTOCK
  • Item #: 9SIAFMXKGN0808
  • Return Policy: View Return Policy
Limited Time Offer
$27.99
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RIITOP M.2 PCIe M Key to SATA 6G Adapter Card 6 Ports, NVMe to 6x SATA 6Gbps Expansion Adapter Card for Desktop PC Computer, ASM1166 6Gbps with Smart Indicator, Support Soft Raid
RIITOP M.2 PCIe M Key to SATA 6G Adapter Card 6 Ports, NVMe to 6x SATA 6Gbps Expansion Adapter Card for Desktop PC Computer, ASM1166 6Gbps with Smart Indicator, Support Soft Raid
  • Type: SATA Expansion Card
  • Standard: SATA 3.0
  • Data Transfer Rate: 6Gbps
  • Model #: NVT6S
  • Item #: 9SIAFMXKC86378
  • Return Policy: View Return Policy
Limited Time Offer
$49.99
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Quad M.2 NVMe to PCIe Adapter Expansion Card (PCIe Bifurcation Motherboard is Required), Support 4* M.2 PCIe NVMe SSD
Quad M.2 NVMe to PCIe Adapter Expansion Card (PCIe Bifurcation Motherboard is Required), Support 4* M.2 PCIe NVMe SSD
  • Type: Controller Card
  • Model #: 4NV-PCE16X
  • Item #: 9SIAFMXJV34725
  • Return Policy: View Return Policy
Limited Time Offer
$47.90
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Asus HYPER M.2 X16 GEN 4 CARD Hyper M.2 x16 Gen 4 Card (PCIe 4.0/3.0)
Asus HYPER M.2 X16 GEN 4 CARD Hyper M.2 x16 Gen 4 Card (PCIe 4.0/3.0)
  • Type: PCI Express to M.2 Card
  • External Ports: 4 x M.2 slots (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0/3.0)* * Supports PCIe M.2 storage devices only.
  • Internal Ports: PCIe 4.0/3.0 x16 interface, compatible with PCIe x8 and x16 slots, support data transfer rates up to 256 Gbps.
  • Specifications: 1 x M.2 FAN Power Switch 4 x M.2 access LEDs
  • Model #: HYPER M.2 X16 GEN 4
  • Item #: 9SIA7BBE8D2643
  • Return Policy: View Return Policy
$200.99
Free Shipping

I have two of these in a Threadripper PC. In an X16 socket 4 M.2 drives. In an X8 socket 2 M.2 drives. All six drives run off cpu lanes at max speed for the M.2 drive. FLAWLESS with Sabrent GEN4 drives for months. No temp throttling.

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2PORT PCI EXPRESS SERIAL CARD
2PORT PCI EXPRESS SERIAL CARD
$78.99
$1.99 Shipping
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StarTech 4 Port PCI Express to SATA Converter Expansion Card 4P6G-PCIE-SATA-CARD
StarTech 4 Port PCI Express to SATA Converter Expansion Card 4P6G-PCIE-SATA-CARD
$71.99
$1.99 Shipping

I love the looks of it even though I don't see it often, and it is easy to install and works great.

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4 Port USB 3.2 Type C PCIe Expansion Card Adapter 5Gbps, RIITOP PCI-e Express to USB Type C 4 Port Card for Desktop PC Support Windows 11/10/8/7/XP/Vista, Self-Powered Supply
4 Port USB 3.2 Type C PCIe Expansion Card Adapter 5Gbps, RIITOP PCI-e Express to USB Type C 4 Port Card for Desktop PC Support Windows 11/10/8/7/XP/Vista, Self-Powered Supply
  • Type: PCI Express Controller Card
  • External USB Ports: 4x USB Type C
  • Model #: PCE1XT4C-5G
  • Item #: 9SIAFMXKGN0843
  • Return Policy: View Return Policy
Limited Time Offer
$37.99
Free Shipping