1. Strong compatibility: connect the sound codec, jack control and switch to a computer via a single USB connector. Supports wins, for OS X, for , for and for iOS. No drivers needed.
2. Full functionality: Works with FT8, for FT4, for JS8Call, for , for SSTV, for , for APRS, for Varahf, for VaraFM and for SoundModem. Enables complete CAT control on powerful transceivers and reliable settings for HT and basic mobile radios.
3. High Reliability: Premade transceiver cables are available for popular for Elecraft, for Xiegu and other popular brands, bringing you professional and reliable user experience.
4. Built-in interface: combines sound card and serial port on . Supports TTL/232 levels, USB serial control and flexible connection to different devices with dual 3.5mm 4-pin jacks.
5. Versatile Sound and Serial Ports: Define sound input and output, PPT control (USB serial control, no sound) and serial port input and output (TTL default, can be switched to 232) with optional 3.3V voltage output support for and backup expansion port.

Speculation:
Item Type: Integrated Digital Modes Interface
Material: ABS
Size: approx. 53 x 23 x 14 mm / 2.09 x 0.91 x 0.55 in (excluding USB head protrusion).
Power supply: USB powered
Interface: 1 x sound, 1 x serial

How to use:
Remove product from packaging and it's ready to use

Packing list:
1 x Digital Mode Interface