Is this card backwards compatible with PCIE - x1?

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.

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?

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.

Would you advise using both LP4 and SATA power connectors?

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

Does it have EFI firmware and boot on a Mac?

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

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StarTech

Product ID: 1716295

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Details

Brand
StarTech
Hardware Interface
USB 3.0
Product Dimensions
6.6"L x 0.6"W
Style
PCI Express
Item Weight
0.09 Kilograms

⚡4 dedicated 5Gbps USB 3.0 channels

🔌Optional SATA/LP4 power for high-powered devices

🚀Up to 70% faster UASP data transfer

Description

⚡ Supercharge your USB setup — because speed waits for no one!

PRO GRADE RELIABILITY - Built for IT pros with 2-year warranty and 24/5 multilingual tech support to keep you ahead.
POWER UP WITHOUT LIMITS - Supports SATA or LP4 power connectors to fuel high-demand USB devices effortlessly.
VERSATILE COMPATIBILITY - Works flawlessly with Windows and Linux systems, plus backward compatible with USB 2.0/1.1 devices.
UASP ENHANCED SPEED BOOST - Experience up to 70% faster data transfers with USB Attached SCSI Protocol support.
BLAZING FAST USB EXPANSION - Add four independent USB 3.0 ports with dedicated 5Gbps bandwidth each for seamless multitasking.

The StarTech.com 4 Port USB 3.0 PCIe Card (PEXUSB3S44V) upgrades your PC with four dedicated USB 3.0 ports, each delivering 5Gbps bandwidth. Featuring UASP support for up to 70% faster transfers, optional SATA/LP4 power connectors for high-powered devices, and broad OS compatibility, this expansion card is engineered for professionals demanding speed, power, and reliability.

Specifications

Brand	StarTech
Series	4 Port PCIe USB Card
Item model number	PEXUSB3S44V
Operating System	Windows 8 Linux Windows 7 Windows Server 2012 Windows 10 Windows Server 2016 Windows Server 2019
Item Weight	3.24 ounces
Product Dimensions	6.6 x 0.6 x 4.7 inches
Item Dimensions LxWxH	6.6 x 0.6 x 4.7 inches
Department	Default Category
Manufacturer	StarTech.com
ASIN	B00HJZEA2S
Is Discontinued By Manufacturer	No
Date First Available	December 27, 2013

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