Does it support enough bandwidth to utilize the front panel USB 3.0 connection as well as the rear connection simultaneously?

All I can tell you is that it is the NEC chipset and you must use the drivers from the website even if you have Windows 10 and it puts its own drivers in. The drivers contain a configuration tool where you can turn off power savings mode. I have had problems with power savings on.

Can this addon card help if I'm running out of USB ports?

Yes, this addon card provides additional USB 3.0 ports, including 2 external and 2 internal ports.

Is at least 1 of the 2 INTERNAL connections a 19 pin female motherboard type that can be connected to a pair of front USB case terminal?

Yes, one of the plugs is for power to the unit, the other is a standard USB 3.0 header, it works with both my 3.0 front plugs.

WD_BLACK SN7100 M.2 2280 4TB PCI-Express 4.0 x4 TLC 3D NAND Internal Solid State Drive (SSD) WDS400T4X0E

(12)

$558^.00 –
Save: 5%

$44^.00

$45.03

Free 30-day Returns

Limit 99999 per customer.

Sold by IT Devices Online

Hot Seller

4.6 (27 seller ratings)

Shipped by IT Devices Online

Price alert

Add to Wish List

Best Sellers

Hot Deals 4 Less

Hot Seller

4 (3,719 total ratings)

$45^.23

NothingButSavings

Top Rated

4.5 (9,006 total ratings)

$50^.43

Newegg

$50^.99
+ FREE SHIPPING

Meet Your Seller

IT Devices Online

See Seller Store

More Resources

Manufacturer Brochure

User Manual

Main image of StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power

100%

Alt view image 2 of 5 - StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power

Alt view image 3 of 5 - StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power

Alt view image 4 of 5 - StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power

Alt view image 5 of 5 - StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power

360^°

Shop All STARTECH Products | Visit IT Devices Online Store

StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power

(9) Write a Review

Add front or rear panel USB 3.0 ports to your computer case using USB 3.0 motherboard-style headers
4 Port PCIe USB 3.0 Card
2 External & 2 Internal
SATA Power
UASP Support
USB 3.0 Adapter Card with 2x Int Motherboard-Style Headers
Native OS Support in Windows 8 and 8.1 and Linux kernel 2.6.31 or later for easy driver installation
Flexibility to connect external and internal USB 3.0 devices

Overview

Specs

Reviews (9)

See all Q & A

Any questions? Our AI beta will help you find out quickly.

Try me now

Add front or rear panel USB 3.0 ports to your computer case using USB 3.0 mother

Model
Brand	StarTech.com
Model	PEXUSB3S2EI

Details
Type	PCI to 1394 / USB Card
External USB Ports	2-port USB 3.0
Internal USB Ports	2x USB Ports
External Ports	2 - USB 3.0 A (9 pin; SuperSpeed) Female
Internal Ports	1 - SATA Power (15 pin) Plug 2 - IDC (20 pin; USB 3.0; Motherboard Header) Receptacle
Standard	USB 3.0
Data Transfer Rate	Up to 5.0 Gbps
Operating Systems Supported	Windows® 8 / 8.1 (32/64bit), 7 (32/64), Vista (32/64), XP (32/64) Windows Server® 2012, 2008 R2 Linux 2.6.31 and up (Tested up to 3.5)
Specifications	Bus Type: PCI Express Card Type: Standard Profile (LP bracket incl.) Chipset ID: Renesas / NEC - µPD720201 Industry Standards: USB 3.0 Specification Rev. 1.0 PCI Express Base Specification Rev. 2.0 Intel xHCI Specification Rev. 1.0 Interface: USB 3.0 Port Style: Integrated on Card Ports: 4 Maximum Cable Length: 9.8 ft [3 m] Maximum Data Transfer Rate: 5 Gbps MTBF: 1,920,042 Hours Type and Rate: USB 3.0 - 5 Gbit/s UASP Support: Yes

Features
Features	Add front or rear panel USB 3.0 ports to your computer case using USB 3.0 motherboard-style headers 4 Port PCIe USB 3.0 Card 2 External & 2 Internal SATA Power UASP Support USB 3.0 Adapter Card with 2x Int Motherboard-Style Headers Native OS Support in Windows 8 and 8.1 and Linux kernel 2.6.31 or later for easy driver installation Flexibility to connect external and internal USB 3.0 devices

Dimensions & Weight
Dimensions	4.70" x 0.70" x 3.60"
Weight	0.12 lb.

Packaging
Package Contents	1 - 4 Port PCI Express USB 3.0 Card - 2 Ext 2 Int 1 - Low-Profile Bracket 1 - Driver CD 1 - Instruction Manual

Additional Information
First Listed on Newegg	January 19, 2026

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
Read full details
CONTACT

Return Policies

Return for refund within: 30 days
Return for replacement within: 30 days
This item is covered by IT Devices Online Return Policy

Manufacturer Contact Info

For a directory of all our manufacturers, please click below.
Manufacturers Directory

Best Sellers

Meet Your Seller

StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power

Learn more about the STARTECH PEXUSB3S2EI

Customer Reviews of the STARTECH PEXUSB3S2EI

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Item#: 9SIBSWCKS02705

Best Sellers

Meet Your Seller

StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power

Learn more about the STARTECH PEXUSB3S2EI

Customer Reviews of the STARTECH PEXUSB3S2EI

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info