Advanced data centers require high throughput I/O processing for servers and storage devices connectivity. Silicon photonics technology offering low-cost, low-power, and high-performance is a promising solution for interconnection applications. In this talk, we will review the latest progress of the highly integrated Silicon photonics devices for 4×25 Gb/s active optical cables and transceivers. This includes hybrid lasers, WDM multiplexers, electro-absorption modulators, and germanium detectors.