DescriptionAsynchronous serial data bus compatible with all handshake and modulation controller interface signals. Supported data format is 8 data bits, 1 stop bit and parity bits. Connotation 512 byte receive buffer and 512 byte transmit buffer. Supports handshaking or X-ON/X-OFF.Features- Color: As shown. - Material: Metal - Size: 8x3x2cm - Included USB transceiver, without external circuit device - Includes a clock circuit, no external circuitry is - Includes power-on reset circuit - Chip 3.3V voltage regulator output voltage can be - Meet the USB2.0 specification requirements - SUSPEND pin supports USB suspend state - Asynchronous serial data bus compatible with all handshake and modulation controller interface signals - Supported data format is 8 data bits, 1 stop bit and parity bits - Connotation 512 byte receive buffer and 512 byte transmit buffer - Supports handshaking or X-ON/X-OFF - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you!