VisionTek Thunderbolt 3 Mini eGFX External GPU enclosure - 901252 | Dell USA
Amazon.com: Type-C Thunderbolt 4 Cable, 1ft USB4 Cord Compatible for Thunderbolt 4/3, Support 100W Fast Charge and 40Gbps Data Transfer, Offering 8K on TB Devices, DELL, SSD, Docks, eGPU, Razer, Mac Mini,
Amazon.com: RIITOP USB4 Extension Cable Short [40Gbps, 1FT], USB C 4.0 Male to Female Cord Extender Compatible with Thunderbolt 3/4 for Dell Thunderbolt Dock, eGPU : Electronics
Dell has discontinued the Alienware Graphics Amplifier, its external GPU - The Verge