ASUS has also implemented a single Thunderbolt 5 pin-header for the GPIO, SPI I2C and UART interfaces, plus a standard USB 2.0 header, for adding USB 2.0 support to the Thunderbolt 5 ports. Just as with the Gigabyte card, we find Intel’s JHL9580 Thunderbolt 5 controller at the heart of the card and once again it uses a PCIe 4.0 x4 interface and supports up to three DP 2.1 8K displays at 60 Hz, although ASUS mentions that this requires DSC. The card features three mini DP inputs and comes with three DP to mini DP adapters, as well as the two aforementioned USB Type-C ports. Note that if you use tree displays, you can only use two Thunderbolt devices with the card. ASUS only mentions Windows 11 64-bit support, so it looks like Windows 10 won’t be getting a driver and so far it would seem neither is Linux.
ASUS Also Launches Thunderbolt 5 Add-in Card
Hot on the heels of Gigabyte, ASUS has also put its Thunderbolt 5 card up on its website, although there are some differences between the two. Obviously the physical appearance differs somewhat, but that’s largely cosmetic. However, the one key difference is that the ASUS ThunderboltEX 5 only sports a single 6-pin PCIe power connector. ASUS still claims USB PD support of up to 130 W—a feature the company calls Flexible FastCharge—however, a single USB Type-C port is limited to a maximum of 96 W, which means you can charge your MacBook Pro at full tilt, but not some other laptops. Admittedly the 4 W discrepancy compared to the Gigabyte card is fairly minor, but the second port gets left with only 34 W, although that’s still enough for charging most phones. Oddly enough, ASUS ThunderboltEX 4 card, allowed for up to 100 W on a single port.