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Instruction Manual — USB-C Multiport Adapter 8K With Ethernet V3

This manual covers setup and features for the Satechi USB-C Multiport Adapter 8K With Ethernet V3 (Model: ST-P8KEM / ST-P8KES / ST-P8KED).

📄 Download User Manual — USB-C Multiport Adapter 8K With Ethernet V3 · PDF · 1.6 MB

In the Box

USB-C Multiport Adapter 8K With Ethernet V3, User Manual.

Specifications

Model: ST-P8KEM (Space Gray) / ST-P8KES (Silver) / ST-P8KED (Midnight)
Dimensions: 114.44 x 54.12 x 15.96 mm (75 x 135 mm body)
Cable Length: 6.63"
Weight: 4.25 oz
Connector: USB-C (Thunderbolt 3/4 and USB4 compatible)

Ports & Speeds:
1× HDMI — 8K 30Hz or 4K 120Hz (Windows); 4K 60Hz (macOS)
1× USB-C PD — up to 85W output (100W input, ~15W used for operation; no video/data)
3× USB-C 3.2 Gen 2 data — up to 10 Gbps
1× USB-C 3.2 Gen 1 data — up to 5 Gbps
1× SD 4.0 card reader — UHS-II, up to 312 MB/s, 2TB max
1× Gigabit Ethernet — 10/100/1000 Mbps

Parts Reference

1. USB-C Cable — Built-in USB-C cable that connects to your laptop's USB-C / Thunderbolt port.
2. SD Card Slot (UHS-II) — SD card reader supporting UHS-II speeds up to 312 MB/s and cards up to 2TB.
3. 3× USB-C Data Ports (10 Gbps) — Three high-speed USB-C 3.2 Gen 2 data ports, up to 10 Gbps each.
4. HDMI Video Port — 8K 30Hz or 4K 120Hz on Windows; 4K 60Hz on macOS. Requires HDMI 2.1 cable and display.
5. USB-C Data Port (5 Gbps) — USB-C 3.2 Gen 1 data port, up to 5 Gbps.
6. Ethernet Port (1 Gigabit) — Gigabit Ethernet (10/100/1000 Mbps) for wired network connectivity.
7. USB-C PD Port (up to 85W) — USB-C power delivery for laptop charging. Does not support data transfer or video output.

Setup

The adapter is plug-and-play — no drivers required for most operating systems.

Step 1: Plug the built-in USB-C cable into a USB-C or Thunderbolt 3/4 port on your laptop.
Step 2: Connect your devices to the adapter's ports.
Step 3: For video output, connect an HDMI 2.1 cable from the adapter's HDMI port to your display.

Important Notes

USB-C PD port is for charging only: The USB-C PD port does not support data transfer or video output. It is for power delivery to your laptop only.

8K video output requires HDMI 2.1: To achieve 8K video output, your host device, external monitor, and HDMI cable must all support HDMI 2.1 technology. A direct HDMI-to-HDMI cable is required — adapters or converters may not work.

8K video output is not supported on macOS: The 8K 30Hz resolution is only available on Windows. On macOS, the maximum HDMI output is 4K 60Hz.

Frequently Asked Questions

What is the maximum HDMI resolution on macOS?
On macOS, the HDMI port supports up to 4K 60Hz. 8K output (8K 30Hz) is only available on Windows with an HDMI 2.1-compatible host device, cable, and monitor.

Can I charge my laptop through this adapter?
Yes. Connect a USB-C PD charger (up to 100W) to the USB-C PD port (port 7). The adapter uses approximately 15W for operation, delivering up to 85W to your laptop.

What SD card speeds does this adapter support?
The SD card reader supports UHS-II speeds up to 312 MB/s and cards up to 2TB capacity.

Does this adapter work with Thunderbolt 3 and 4?
Yes. The adapter is compatible with USB-C, Thunderbolt 3, Thunderbolt 4, and USB4 host devices.

Safety Instructions

Warning: Fire, electric shock, or damage could occur if the following instructions are not obeyed.

1. Do not expose to extreme heat or direct sunlight for extended periods.
2. Do not drop or subject the adapter to strong impacts.
3. Keep away from liquids and moisture.

Need Help?

Contact Satechi Support at support.satechi.com or email support@satechi.com.
Phone: +1 858 268 1800 | Website: www.satechi.com