CRS309-1G-8S+IN: Desktop switch with one Gigabit Ethernet port and eight SFP+ 10Gbps ports Click to enlarge Rack mount kit (Asnyc Ears) included!The CRS309-1G-8S+ is a very compact, yet powerful networking switch. It has eight SFP+ slots, supporting up to 10 Gbit module in each, which results in a total switching capacity of 162 Gbps and total non-blocking throughput of 81 Gbps.The device also has dual-core 800 MHz CPU, 512 MB RAM, a management Ethernet port with PoE power input, RS232 serial port, a grounding terminal and is capable of dual boot (choose which operating system you prefer, RouterOS, or SwOS). Product specifications: Details Product code CRS309-1G-8S+IN Architecture ARM 32 bit CPU 800 MHz 98DX8208 CPU core count 2 Size of RAM 512 MB Storage 16 MB Flash Tested ambient Temp -40�C to 70�C Dimensions 272 x 158 x 44 mm Powering PoE in 802.3af/at PoE in input Voltage 12-57 V DC Inputs PoE in, DC Jack DC Input voltage 18-57 V Max power consumption 23 W (17 W without attachments) Interfaces 10/100/1000 Ethernet 1 SFP+ ports 8 Other CPU Temperature Monitor yes quick guide product brochure