PURPLELEC Thunderbolt 5 eGPU Dock (TB1015A40) — 80Gbps External Graphics Card Enclosure for Laptops
Turn your thin-and-light laptop into a full desktop-class workstation. The PURPLELEC TB1015A40 is a versatile Thunderbolt 5 external graphics card dock (eGPU) that connects through a single cable to deliver desktop GPU performance, 80Gbps bandwidth, and up to dual 8K@60Hz video output. It works with Windows laptops, MacBooks, and any device featuring a Thunderbolt 3/4/5 or USB4 port.
Desktop GPU Power Through One Cable A full-length PCIe x16 slot accepts high-end desktop graphics cards — NVIDIA RTX 20/30/40/50 Series (RTX 3070 / 3080 / 4080 / 4090 and more) and AMD RX 7000/8000/9000 Series (such as RX 7900 XTX) — up to 400mm in length. The slot supports PCIe x1/x4/x8/x16 cards, so it's flexible across GPU generations, and graphics cards are hot-swappable.
Thunderbolt 5 — 80Gbps of Headroom Built on Thunderbolt 5, the upstream port delivers up to 80Gbps of bandwidth and is backward-compatible with Thunderbolt 3/4 and USB4. That bandwidth is what makes real eGPU performance and uncompressed dual-8K display output possible.
Up to Dual 8K@60Hz Displays Two downstream Thunderbolt 5 ports drive a single 8K@60Hz display, or two 8K@60Hz displays simultaneously — verified on both Windows and macOS. Ideal for video editing, 3D rendering, photography, and multi-monitor productivity.
Bring Your Own Power — Up to a 2U Server PSU An internal ATX power bay accepts a standard 2U server power supply (up to 240 x 100 x 70mm), giving you ample, stable headroom to feed power-hungry GPUs. The dock charges the connected laptop with up to 100W of upstream power delivery (PD 3.0), so one cable handles both data and charging.
Built to Last, Built to Run Cool The chassis combines metal and plastic for a clean, durable, and eco-conscious build, with a dedicated cooling design to keep the GPU and power supply running stable under load. An auxiliary pull tab and a lock-screw mechanism make installing the GPU and PSU straightforward and keep everything securely fastened.
Who It's For Students, teachers, photographers, video and film professionals — anyone working in offices, studios, or photography/production environments who needs desktop graphics performance from a portable laptop.
| Item | Detail |
| Model | PEC-TB1015A40 |
| Product Type | Thunderbolt 5 External Graphics Card Dock (eGPU Enclosure) |
| Host Port | 1 x Thunderbolt 5 — 80Gbps, DP Alt Mode 1.4/2.1, PD 3.0 100W upstream power delivery, hot-pluggable; compatible with TB3/TB4 & USB4 (operating voltage 5V ±5%) |
| Downstream Ports | 2 x Thunderbolt 5 — 80Gbps data, 15W power delivery each |
| USB Port | 1 x USB-A 3.2 Gen2 — 10Gbps, BC1.2, 3A current limit |
| Expansion Slot | 1 x PCIe x16 slot — supports PCIe x1/x4/x8/x16 cards, PCIe 3.0 x4, hot-swappable GPU |
| Supported GPUs | NVIDIA RTX 20/30/40/50 Series (RTX 3070/3080/4080/4090, etc.); AMD RX 7000/8000/9000 Series (e.g. RX 7900 XTX); up to 400mm card length |
| Power Input | 1 x ATX power port; internal bay for 2U server PSU (up to 240 x 100 x 70mm) |
| Max Video Output | Single display: 8K (7680x4320) @60Hz · Dual display: 2 x 8K (7680x4320) @60Hz (Windows & macOS) |
| Data Transfer | Thunderbolt 5: 80Gbps · USB-A: 10Gbps |
| OS Support | Windows 7/8/10/11 (32 & 64-bit), macOS X 10.x and later, Linux |
| Product Dimensions | 384.0 x 182.7 x 192.7 mm |
| Product Weight | 3.7 KG |
| Certifications | CE, FCC |
| In the Box | 1 x eGPU Dock · 1 x Thunderbolt 5 Cable · 1 x Instruction Manual · 1 x Warranty Card (power supply not included — optional) |
Q1: Does the dock include a power supply or a graphics card?
A1: No. The graphics card and power supply are not included. The dock has an internal bay that accepts a standard 2U server power supply (up to 240 x 100 x 70mm), and a PCIe x16 slot for your desktop GPU.
Q2: Which graphics cards are compatible?
A2: NVIDIA RTX 20/30/40/50 Series (e.g. RTX 3070, 3080, 4080, 4090) and AMD RX 7000/8000/9000 Series (e.g. RX 7900 XTX), with a maximum card length of 400mm. The slot supports PCIe x1/x4/x8/x16 cards.
Q3: What laptops and systems does it work with?
A3: Any device with a Thunderbolt 3/4/5 or USB4 port — including Windows laptops and MacBooks. Supported operating systems: Windows 7/8/10/11 (32 & 64-bit), macOS X 10.x and later, and Linux.
Q4: Can it really output 8K?
A4: Yes. Over Thunderbolt 5, it supports a single 8K@60Hz display or two 8K@60Hz displays simultaneously, verified on both Windows and macOS.
Q5: Will it charge my laptop?
A5: Yes. The host Thunderbolt 5 port delivers up to 100W of upstream power (PD 3.0), charging your laptop over the same single cable used for data and video.
Q6: Can I swap graphics cards without powering everything down?
A6: The PCIe slot supports hot-swappable graphics cards. For safe operation, follow the manual: when using auxiliary power, power on the dock before connecting the laptop, and allow at least 10 seconds between hot-plug operations.
Q7: Is Thunderbolt 5 backward compatible?
A7: Yes. The host port is backward-compatible with Thunderbolt 3, Thunderbolt 4, and USB4. Note that bandwidth and display output will be limited by the host port's own standard.
Q8: Does it support fast data devices besides the GPU?
A8: Yes. Two downstream Thunderbolt 5 ports (80Gbps, 15W each) and one USB-A 3.2 Gen2 port (10Gbps, BC1.2) let you connect storage, displays, and peripherals.
