CP2102 USB 2.0 to TTL Module Serial Converter With Jumper Wires
Specification:

1:Temperature Range: -40 to +85.
2:Supports Windows 98SE, 2000, XP, Vista, Window7, Mac OS 9, Mac OS X & Linux 2.40.
3:Standard USB type A male and TTL 5pin connector. 5pins for 3.3V, RST, TXD, RXD, GND & 5V
4:Hardware or X-On/X-Off handshaking supported.
5:Baud rates: 300 bps to 1.5 Mbps.
6:Power output: Dual 3.3V and 5V
7:Material: PCB
8:Color: Red
9:Supports full range of STC single-chip microcomputer with output voltage 3.3V and 5V
10: it can be used for USB to TTL electronic projects.
11:USB specification 2.0 compliant with full-speed 12Mbps
Package included:
3 sets CP2102 Module USB to TTL 5PIN Serial Converter Adapter Module Downloader for UART STC 3.3V and 5V with Jumper Wires