Question 1

Is this card backwards compatible with PCIE - x1?

Accepted Answer

Since this question, and the answer by D. Brown were posted in 2014, this listing seems to have changed to include a large variety of individual cards (without giving each its own individual questions), resulting in the confusing associated comments posted years later.

Even the information posted with a specific card is scrambled, as, whith the PEXUSB3S44V card selected, the 'Specifications Sheet' document linked refer to the Model# PEXUSB3S4V card, with the following specifications:

"
4 Port PCI Express PCIe SuperSpeed USB 3.0
Controller Card Adapter with UASP - SATA Power

Connector Type(s) 1 - PCI Express x1 Male
External Ports 4 - USB Type-A (9 pin) USB 3.0 Female
Internal Ports 1 - SATA Power (15 pin) Plug

OS Compatibility:
Windows® XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016

Note: The maximum throughput of this card is limited by the bus interface. If used with PCI Express Gen 1.0 enabled computers, the max throughput is 2.5 Gbps. If used with PCI Express Gen 2.0 enabled computers, the max throughput is 5 Gbps.
"

While the 'User Manual' linked is for the Model# PEXUSB3S44V card, which has markedly different requirements:

"
4 Port PCI Express USB 3.0 Card with 4
Dedicated Channels - UASP - SATA/LP4 Power

• Available PCI Express x4 or higher (x8, x16) slot
• A SATA or LP4 power connector (optional, but recommended)
• Windows® Vista, 7, 8, 8.1, 10, Windows Server® 2008 R2, 2012, 2012 R2, Linux 2.6.31
to 4.4.x LTS versions only
"

Obviously, here, the latter is correct, but, troublingly, given the large number of items included on this page, ALL of the answers and specifications listed are correct, just each for different products that were thoughtlessly merged into a single listing.

Question 2

Is this card faster than "standard" USB 3.0 PCI cards, at least enough to justify the price? Or is it's main feature the that it has ind. channels?

Accepted Answer

Most usb 3.0 cards have once channel that all the ports share, the same as plugging in a USB hub into a one-port card.. This one 4-lane card effectively has 4 conventional 1-lane cards in it. This makes it faster overall when devices are used simultaneously. Assuming the flavor of your expansion slot can handle the bandwidth, that is.

Question 3

Would you advise using both LP4 and SATA power connectors?

Accepted Answer

Hi, We would only recommend one or the other. The PEXUSB3S44V would not receive any extra power if you used both SATA and LP4 at the same time.Thank you, NickStarTech.com Support

Question 4

Does it have EFI firmware and boot on a Mac?

Accepted Answer

Hi,This card does not support Mac operating systems.Let us know if you have any other questions.Thank you, NickCustomer SupportStarTech.com

ASIN	B00HJZEA2S
Best Sellers Rank	#32,110 in Computers ( See Top 100 in Computers ) #21 in USB Port Cards
Brand	StarTech
Built-In Media	Low-profile bracket, USB adapter
Compatible Devices	Personal Computer
Customer Reviews	4.2 4.2 out of 5 stars (625)
EU Spare Part Availability Duration	2 Years
Global Trade Identification Number	00065030854627, 00115971579681
Hardware Interface	USB 3.0
Item Dimensions L x W x H	16.8L x 1.5W x 11.9H centimeters
Item Type Name	USB Adapter
Item Weight	0.09 Kilograms
Manufacturer	StarTech.com
Mfr Part Number	PEXUSB3S44V
Model Number	PEXUSB3S44V
Operating System	Windows 10, macOS
Style Name	PCI Express
UPC	115971579681 012303035535 012300273299 132018237366 929573526550 650308546276 012304744221 888228027692 803982819444 545070914333 014445023128 042111645060 065030854627
Unit Count	1 Count

StarTech.com 4 Port USB 3.0 PCIe Card w/ 4 Dedicated 5Gbps Channels (USB 3.2 Gen 1) - UASP - SATA / LP4 Power - PCI Express Adapter Card (PEXUSB3S44V)

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