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    Product comparison

    Name CRS317-1G-16S+RM CRS305-1G-4S+IN CRS309-1G-8S+IN
    10/100/1000 Ethernet ports 1 1 1
    AC input range 100-240 N/A N/A
    Architecture ARM 32bit ARM 32bit ARM 32bit
    Beeper Yes N/A Yes
    CPU 98DX8216 98DX3236 98DX8208
    CPU Threads count 2 N/A 2
    CPU core count 2 1 2
    CPU nominal frequency 800 MHz 800 MHz 800 MHz
    CPU temperature monitor Yes Yes Yes
    Can be used indoors Yes Yes Yes
    Certification CE, EAC, ROHS CE, EAC, ROHS CE, EAC, ROHS
    Cooling type 2 fans Passive Passive
    DC jack input Voltage N/A 12-57 V 12-57 V
    Dimensions 443 x 224 x 44 mm 141 x 115 x 28 mm 272 x 191 x 44 mm
    IP N/A IP20 IP20
    MTBF Approximately 200'000 hours at 25C Approximately 200'000 hours at 25C Approximately 200'000 hours at 25C
    Max power consumption 44 W 18 W 23 W
    Max power consumption without attachments N/A 10 W 17 W
    Number of AC inputs 2 N/A N/A
    Number of DC inputs N/A 3 2
    Operating System RouterOS / SwitchOS RouterOS / SwitchOS RouterOS / SwitchOS
    PoE in N/A 802.3af/at 802.3af/at
    PoE in input Voltage N/A 12-57 V 18-57 V
    RouterOS license 6 5 5
    SFP+ ports 16 4 8
    Serial console port RJ45 N/A RS232
    Size of RAM 1 GB 512 MB 512 MB
    Storage size 16 MB 16 MB 16 MB
    Storage type FLASH FLASH FLASH
    Switch chip model 98DX8216 98DX3236 98DX8208
    Tested ambient temperature -20°C to 60°C -40°C to 70°C -40°C to 70°C