The ThinkPad X6 Tablet UltraBase snaps easily onto your ThinkPad X60 Tablet system for portable expansion. It offers:<br><br>- An Ultrabay Slim for device expansion<br><br>- Supports Ultrabay Slim CD-RW/DVD-ROM Combo, Multi-Burner drives, and can also house a second ThinkPad hard drive* <br>- Provides storage capacity for a second hard drive or a bay battery for all-day computing <br>- Standard communication and device ports, including Gigabit Ethernet (RJ-45), modem (RJ-11), four USB 2.0, serial and parallel<br><br>- Audio/video capabilities including VGA for external monitor, microphone in, headphone out, and integrated stereo speakers<br><br>- Integrated key lock and optional cable lock slot for security<br><br>- System power-on button and easy ejection lever<br><br>- Power passthrough to fuel your system and recharge the battery<br><br>- Supports the ThinkPad Advanced Ultrabay Battery for up to 11 hours of mobile computing when used in combination with the high-capacity system batt