System Requirements:

Available USB-C™ port that supports DisplayPort™ Alt Mode and USB™ Power Delivery 2.0 or 3.0. Please refer to the manufacturer of your computer for more information on your hardware specifications.

Special Notes:
  • • A 4K-capable display is required for obtaining the 3840 x 2160 resolution
  • • If you are using high-powered USB devices, attach a USB-C power supply to the power delivery port to ensure maximum performance
  • • To ensure files copy completely, do not remove the USB-C power adapter while copying files
  • • Power adapter not included. If applicable, please use your computer’s OEM power adapter
  • • We recommend at most one (1) bus-powered/portable external hard disk drive to be connected to the dock at a time



2-Year Limited

Host Connector

Main Body: USB-C™ Male
Magnetic Kits: USB-C™ Male

Video Output

Main Body:
HDMI™ Female

Magnetic Kits:
HDMI™ Female

Power Source

Bus-powered or self-Powered

Network Interface


Audio Supported



Main Body:
1 - USB-C™ Power Delivery 3.0
1 - USB-C™ 3.1 Gen 1
2 - USB™ 3.1 Gen 1 Type-A
1 - 4K HDMI™

Magnetic Kits (stand-alone mini adapters):
1 - USB-C™ to 4K HDMI™
1 - USB-C™ to SD™ & microSD™ 3.0


Maximum Display Resolution

Main Body: 3840 x 2160
Magnetic Kits: 3840 x 2160

Maximum Display Refresh Rate

Main Body: 30 Hz
Magnetic Kits: 60 Hz

Maximum Data Transfer Rate

Main Body: 5 Gbps
Magnetic Kits: 5 Gbps

Displays Supported

Main Body: 1
Magnetic Kits: 2 (when used with the main body and connected to a compatible MacBook®)

Compatible Networks


Audio Channel

Main Body: 2.1 via HDMI™
Magnetic Kits: 2.1 via HDMI™

Power Delivery

Up to 100W via USB-C

Input Current

Up to 5A

Input Voltage

Up to 20V

Output Current

Up to 4.75A

Output Voltage

Up to 20V

Physical Specifications


Silver, White

Enclosure Type

Main Body: Aluminum
Magnetic Kits: ABS Plastic

Cable Length


Product Height

Main Body: 0.51 in. (13 mm)
Magnetic Kits: 0.51 in. (13 mm)

Product Width

Main Body: 1.34 in. (34 mm)
Magnetic Kits: 1.34 in. (34 mm)

Product Depth

Main Body: 3.86 in. (98 mm)
Magnetic Kits: 0.83 in. (21 mm)

Product Weight

Main Body: 1.69 oz (48g)
Magnetic Kits: 0.42 oz (12g)

Storage Temperature

14 to 149°F (-10 to 65°C)

Storage Humidity

< 85% non-condensing

Operating Temperature

30 to 118°F (0 to 48°C)

Operating Humidity

< 85% non-condensing

Package Contents

  • • 1 - JCD387 ULTRADRIVE Kit USB-C™ Dual-Display Modular Dock
  • • Quick Installation Guide