![PCI-Express Connectivity Kit (PCIe – Desktop)](https://www.ettus.com/wp-content/uploads/2019/01/PCIE_Kit.png)
783346-01 | PCIe Interface Kit for USRP X3xx (Desktop)
The PCI-Express Connectivity Kit provides high-speed connectivity between a desktop PC (with an available PCI-Express x4 slot) to the USRP ™ X300/X310. The kit includes a PCI-Express x4 adapter card, regular and low profile brackets, and 3.0m cable. The cabled PCIe bus interface provides up to 200 MS/s of full duplex data throughput with round-trip latencies as low as 10 us.
![OctoClock-G CDA-2990](https://www.ettus.com/wp-content/uploads/2019/01/CDA-2990_Large_1.png)
784306-01 | OCTOCLOCK-G CDA-2990 8-Channel Clock Distribution Module with Integrated GPSDO
The OctoClock-G CDA-2990 is an upgraded version of the OctoClock CDA-2990, which includes an internal GPS-disciplined, oven-controlled crystal oscillator. Like the OctoClock CDA-2990, the OctoClock-G CDA-2990 provides 8 PPS and 10 MHz outputs.
![OctoClock CDA-2990](https://www.ettus.com/wp-content/uploads/2019/01/CDA-2990_Large.png)
784305-01 | OCTOCLOCK CDA-2990 8 Channel Clock Distribution Module (External Reference Required)
The OctoClock CDA-2990 is an affordable solution for high-accuracy time and frequency reference distribution. The OctoClock CDA-2990 accepts 10 MHz and PPS signals from an external source and distributed each signal 8 ways. This is a useful accessory for users that would like to build multi-channel systems that are synchronized to a common timing source. Requires external 10 MHz/1 PPS source.
![GPSDO Kit for USRP N200/N210](https://www.ettus.com/wp-content/uploads/2019/01/GPSDO_650x650.jpg)
782779-01 | USRP GPS-Disciplined Oscillator Kit
Includes GPS locked reference oscillator for USRP N200/N210 series (rev 4 and above). Kit includes 1 power cable, 1 serial cable, 3 RF cables, and 2 screws required to install inside the USRP N200 series chassis. For applications requiring the use of an active GPS antenna, this module requires a 3V LNA compatible GPS antenna (not provided).
![Rackmount for USRP N2xx](https://www.ettus.com/wp-content/uploads/2019/01/prod_u2-rackmount_01_lg.jpg)
782778-01 | USRP Rack Mount Kit (Combine 4 Devices into 3U, 19" Rack) (Not for USRP1)
Includes a 19″ 3U Rackmount for USRP N2xx chassis. Holds up to 4 chassis (not for USRP-1).
![USRP POWER SUPPLY (5.9V 4A DC)](https://www.ettus.com/wp-content/uploads/2019/01/prod_power-supply_01_lg.jpg)
784868-01 | USRP POWER SUPPLY (5.9V 4A DC)
Includes the power supply for the following USRP device. USRP E Series: E310, E312 USRP B Series: B200, B210, USRP 1 USRP N Series: N200, N210 Input: 100-240V, 50-60Hz, 0.58AOutput: 5.9V, 4A