ThunderboltEX 4
ASUS ThunderboltEX 4 expansion card, dual Thunderbolt™ 4 (USB‑C®) ports, DisplayPort™ 1.4, PCIe® 3.0 x4 interface
- Intel®-certified Thunderbolt™ 4 add-on card
- 40 Gbps bi-directional bandwidth for superfast data transfers and video output
- Dual Thunderbolt™ 4 ports (USB-C®), with support for up to five Thunderbolt devices in a daisy chain
- DisplayPort™ 1.4 for 8K Ultra HD support
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Enable blisteringly fast speeds and any-way-up connectivity
ASUS ThunderboltEX 4 is a Thunderbolt™ 4 add-on card that offers 40 Gbps bi-directional bandwidth, USB4™ device compatibility, and DisplayPort™ 1.4. It supports up to five Thunderbolt devices in a daisy chain and enables up to 100-watt USB-C® charging for laptops.
![ASUS ThunderboltEX 4 add-on card on a motherboard](https://dlcdnwebimgs.asus.com/files/media/d753fc57-456a-4f61-a175-06b50a6549fd/img/pic_reticle_2.jpg)
![ASUS ThunderboltEX 4 add-on card on a motherboard](https://dlcdnwebimgs.asus.com/files/media/d753fc57-456a-4f61-a175-06b50a6549fd/img/pic_reticle_s_1.jpg)
Thunderbolt™ (USB-C®) port Up to 100-watt* quick charging
Thunderbolt™ (USB-C®) port Up to 27‑watt quick charge
Mini DisplayPort™ input
![](https://dlcdnwebimgs.asus.com/files/media/d753fc57-456a-4f61-a175-06b50a6549fd/img/pic_ksp.jpg)
ThunderboltEX 4
DisplayPort 1.4
Support 8K Ultra HD outputUSB4
Specification compliant40 Gbps
Bi‑directional bandwidthUp to100W
Quick‑charge supportDaisy‑chain
Up to five Thunderbolt devices per port![ASUS ThunderboltEX 4 transfer speed comparison chart](https://dlcdnwebimgs.asus.com/files/media/d753fc57-456a-4f61-a175-06b50a6549fd/img/pic_chart.jpg)
*Actual charging performance may vary in real world conditions.
Daisy-Chain up to 5
Thunderbolt devices per port
3 devices + 2 Thunderbolt monitors
![The ASUS ThunderboltEX 4 can connect up to three devices and two Thunderbolt monitors through daisy chaining](https://dlcdnwebimgs.asus.com/files/media/d753fc57-456a-4f61-a175-06b50a6549fd/img/pic_dc_a.jpg)
or
Daisy-Chain up to 5
Thunderbolt devices per port
4 devices + 1 Thunderbolt monitor
![The ASUS ThunderboltEX 4 can connect up to four devices and one Thunderbolt monitor through daisy chaining](https://dlcdnwebimgs.asus.com/files/media/d753fc57-456a-4f61-a175-06b50a6549fd/img/pic_dc_b.jpg)