QX-S5500 Series Ethernet Switches
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1.3.2 10/100/1000BASE-T auto-sensing Ethernet port
Each QX-S5500 series provides 10/100/1000Base-T Ethernet ports on its front panel.
Table 1-3 describes the specifications of the 10/100/1000Base-T Ethernet ports.
Table 1-3 10/100/1000Base-T Ethernet port specifications
Item Specification
Connector type RJ-45
Number of port
QX-S5550P : 48 ports
Interface standard
10/100/1000 Mbps, half/full duplex
MDI/MDI-X, auto-sensing
Standard
IEEE 802.3 IEEE 802.3u IEEE 802.3ad
IEEE 802.3x IEEE 802.1p IEEE 802.1D
IEEE 802.1Q IEEE 802.1X IEEE 802.1s
Transmission medium Category-5 unshielded twisted pair cable
1.3.3 SFP port
QX-S5900 series have fixed SFP ports. You can plug the SFP transceiver modules in Table
1-4 as needed.
Table 1-4 1000 Mbps SFP transceiver modules available for the SFP ports
Transceiver module
Central
wavelength
Connector Fiber
Max
transmission
distance
100BASE-FX-SFP 1310 nm LC
50/125 μm multi-mode
optical fiber
2 km
1000BASE-SX-SFP 850 nm
LC
50/125 μm multi-mode
optical fiber
550 m
1000BASE-LX-SFP 1310 nm
9/125 μm single-mode
optical fiber
1550 nm
NOTE:
To guarantee the functionality of the SFP+ ports, use only NEC SFP transceiver modules.
The SFP transceiver modules available for this switch series are subject to change over time. For the most
up-to-date list of SFP transceiver modules, consult your NEC sales representative or technical support
engineer.
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