--- product_id: 275732596 title: "Sonnet Allegro USB-C 4-Port PCIe Card (USB3C-4PM-E)" brand: "sonnet" price: "S$330" currency: SGD in_stock: true reviews_count: 5 category: "Sonnet" url: https://www.desertcart.sg/products/275732596-sonnet-allegro-usb-c-4-port-pcie-card-usb3c-4pm store_origin: SG region: Singapore --- # 4x 10Gb USB-C ports Hot-swappable support Dual USB 3.1 Gen 2 Sonnet Allegro USB-C 4-Port PCIe Card (USB3C-4PM-E) **Brand:** sonnet **Price:** S$330 **Availability:** ✅ In Stock ## Summary > 🔗 Connect, Transfer, Conquer! ## Quick Answers - **What is this?** Sonnet Allegro USB-C 4-Port PCIe Card (USB3C-4PM-E) by sonnet - **How much does it cost?** S$330 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/275732596-sonnet-allegro-usb-c-4-port-pcie-card-usb3c-4pm) ## Best For - sonnet enthusiasts ## Why This Product - Trusted sonnet brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Double the Speed:** Experience data transfers up to 10Gbps, twice as fast as USB 3.0. - • **Power Up Your Devices:** Each port delivers up to 7.5W for bus-powered SSDs and RAID setups. - • **Plug-and-Play Simplicity:** Effortless installation in any PCIe slot—get connected in minutes! - • **Unleash Your Connectivity:** Transform your Mac Pro or Windows PC with four blazing-fast USB-C ports. - • **Stay Connected, Stay Productive:** Hot-swappable design allows seamless device connections without downtime. ## Overview The Sonnet Allegro USB-C 4-Port PCIe Card (USB3C-4PM-E) is a powerful expansion card that adds four high-speed USB-C ports to your Mac Pro or Windows PC. With dual USB 3.1 Gen 2 controllers, it supports data transfers up to 10Gbps, making it ideal for professionals who demand speed and efficiency. Each port can power devices up to 7.5W, and the hot-swappable feature allows for easy connection and disconnection of peripherals without shutting down your system. Compatible with a wide range of operating systems, this card is designed for seamless integration and enhanced productivity. ## Description Sonnet Allegro - Powerful USB 3.2 Gen 2 (USB-C) expansion card add four USB-C 10Gbps ports to Mac Pro, Windows, and Linux computers with PCIe slots. Supported Cables: USB-C 10Gbps USB-C 5Gbps (not recommended) Thunderbolt 3 40Gbps (only 0.5, 0.7, 0.8 meter cable) Thunderbolt 3 20Gbps Chipset: 2x ASMedia 3142 Package contents: Allegro USB-C 4-Port PCIe Adapter Card Mac Compatibility Mac Pro® 3.1 (2), 4.1, 5.1 or 7.1 (20 19) (6) macOS 10.12.6+ (3) macOS Big Sur Cables, adapters and USB sticks with connection sizes > 6.5 mm do not fit the opening of the Mac Pro PCIe back plate (model 7.1, 2019). Review: Good quality - Solid card. A bit pricy as opposed to others but flawless in a Mac Pro 2019. 4 ports but really dual lane (dual bus) as it’s spitting out 10 MB/s twice, so total of 20 MB/s. You will not get 4 x 10MB/s, but you will however get 2 x full 10 MB/s. Review: Works great - I'm using it on PC and it's been working flawlessly for months now. It's expensive but worth it if you want a high quality, reliable card. The cheap cards are cheap for a reason. Buy this one. ## Features - Add four 10Gb USB-C ports to your Mac Pro or Windows PC with PCIe slot (not Thunderbolt) - Dual USB 3.1 Gen 2 controller - Supports data transfers up to twice as fast as USB 3.0 and USB 3.1 Gen 1 - Supports USB-C bus-powered SSD or SSD RAID with power up to 7.5W per port - Protected power supply - The independent current control isolates each port to prevent interruptions in the power supply of individual devices - Compatible with MacOS 10.12.6 - 10.15.7 and 11.3+ and Windows 10. Supports all versions of USB 3 and USB 2 devices. Does not support Thunderbolt peripherals. - Supports hot-swappable device connection - Connect and disconnect peripherals without turning off the computer - Easy installation - Quick and easy installation in any available PCIe slot ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07L8KCQPT | | Brand | Sonnet | | Built-In Media | SoNNeT USB3C-4PM-E | | Compatible Devices | Personal Computer | | Compatible devices | Personal Computer | | Customer Reviews | 4.2 out of 5 stars 149 Reviews | | Global Trade Identification Number | 00732311012648 | | Hardware Interface | PCI Express x4 | | Hardware interface | PCI Express x4 | | Item Weight | 68 Grams | | Item weight | 68 Grams | | Manufacturer | SONNET TECHNOLOGIES | | Mfr Part Number | USB3C-4PM-E | | Model Number | USB3C-4PM-E | | Number of Items | 1 | | Operating System | Mac,Windows | | Style | Single | | Style Name | Single | | UPC | 732311012648 | ## Product Details - **Brand:** Sonnet - **Hardware interface:** PCI Express x4 - **Style:** Single - **Item weight:** 68 Grams - **Compatible devices:** Personal Computer ## Images ![Sonnet Allegro USB-C 4-Port PCIe Card (USB3C-4PM-E) - Image 1](https://m.media-amazon.com/images/I/81fWgSijteL.jpg) ## Questions & Answers **Q: Does anyone know if this card conflicts with a gigabyte gc-titan ridge thunderbolt 3 pcie card in a cmp 4,1 or 5,1?** A: There should not be any conflict. **Q: Does this support video output when installed in 2012 mac pro?** A: No **Q: Will this work with a dell xps 8940. i cannot find any documentation on dell's website regarding the single pci-e slot that's available?** A: No it won’t work on Dells. I found that out the hard way. Stick to Startech. I tried many and they are the only ones that work. **Q: Does support pci 4.0? and does support window 10?** A: All Sonnet cards of all types support PCIe 4.0 slots and Windows 10. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality *by R***C on 12 February 2022* Solid card. A bit pricy as opposed to others but flawless in a Mac Pro 2019. 4 ports but really dual lane (dual bus) as it’s spitting out 10 MB/s twice, so total of 20 MB/s. You will not get 4 x 10MB/s, but you will however get 2 x full 10 MB/s. ### ⭐⭐⭐⭐⭐ Works great *by A***N on 7 August 2026* I'm using it on PC and it's been working flawlessly for months now. It's expensive but worth it if you want a high quality, reliable card. The cheap cards are cheap for a reason. Buy this one. ### ⭐⭐⭐⭐⭐ Totally transformed my 2009 Mac Pro Tower - a totally must-have item. *by C***H on 29 October 2019* Over the past few years I have completely customised my beloved old Mac Pro Tower by adding a faster CPU, more RAM, a PCI SSD and this little beauty from Sonnet. To be condemned to USB 2 ports in this day and age is pure torture. Luckily the good people at Sonnet have come to the rescue with this 4-port USB 3.1 gen2 PCIe card. Installing it was literally plug and play. Now I can attach any modern, high-speed, peripherals like an external USB-C (3.1 gen2) M.2 SSD drive and get very decent speeds. The screen grabs below are from a Sabrent 1TB M.2 NVMe inside a Sabrent enclosure. This PCIe card by Sonnet has completely transformed my computer's abilities. Very impressed. ## Frequently Bought Together - Sonnet Allegro USB-C 4-Port PCIe Card - Sonnet Allegro Pro USB 3.2 Type A PCIe Card (Four SuperSpeed 10Gbps USB Connectors) - Allegro Type A USB 3.2 | 3.0 PCIe 4-Port PCIe Card (Mac and Windows Compatible) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/275732596-sonnet-allegro-usb-c-4-port-pcie-card-usb3c-4pm](https://www.desertcart.sg/products/275732596-sonnet-allegro-usb-c-4-port-pcie-card-usb3c-4pm) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-09-21*