Cisco 100G-QSFP28-SR4: uses a 12-fiber standard QSFP MPO/MTP cable for connectivity (4 Tx and 4 Rx, each lane providing 25 Gbps of throughput) 100GBASE-SR10 optics use a 2×12-fiber or 24-fiber strand MPO/MTP cable for connectivity (10 Tx and 10 Rx, each lane providing 10 Gbps of throughput). MMF = Parallel Multi-Mode ribbon Fiber MMF FDDI MMF OM1 MMF OM2 Laser optimized multimode fiber oft use with 100GBASE MMF OM3 - 50/125 um (2003) 1500 MHz*km @ 850nm -- OFNP ? MMF OM4 - 50/125 um (2008) 3500 MHz*km @ 850nm -- Plunum ? MMF OM5 SMF OS1 SMF OS2
|Table 1: Most commonly used Receptacles in Data Center.|
115 V, 15 AMP, Plug
Standard US 3 plunge household connector.
|(NEMA) 5-15R||115 V, 15 AMP, Receptacle (Socket)|
|(NEMA) 5-20P||115 V, 20 AMP, Plug
Variation of std US 3 plunge plug, with one "horizontal" connector
|(NEMA) 5-20R||115 V, 20 AMP, Receptacle|
|(NEMA) L5-20P||Twist Lock, 115 V, 20 AMP, Plug|
|(NEMA) L21-L20P||Lock, 205 V, 20 AMP, Plug.
This is a 3 phase Y, 20A plug with ground in the middle pin, 4 pins on a circumference, one with a locking notch. Maybe a safer design than L6-20.
But PDU I have seen so far for them always have 5-20 outlets, never seen them with 208V capable C13 outlets, which maybe why they were phased out in favor the L6-30.
Additional ref, diagrams from customAVrack.com
|(NEMA) L21-L20R||Lock, 205 V, 20 AMP, Receptacle|
|(NEMA) L5-20R||Twist Lock, 115 V, 20 AMP, Receptacle|
|(NEMA) L5-30||Twist Lock, 115 V, 30 AMP|
|(NEMA) L6-20P||Twist Lock, 220 V, 20 AMP, Plug|
|(NEMA) L6-20R||Twist Lock, 220 V, 20 AMP, Receptacle|
|(NEMA) L6-30P||Lock, 220 V, 30 AMP, Plug|
|(NEMA) L6-30R||Lock, 220 V, 30 AMP, Receptacle|
|Hubbell 60Amp||60Amp 3-phase military grade connector :) |
IEC 60309. These seems to be color coded, so this typle is always in blue. For data center installation this is the only pig-tail i have seen.
PIN & SLEEVE PLUG 60AMP 3Phase 250VAC 3P 4W IP67 WATERTIGHT
|Table 2: Common plug types for Servers.|
|In IEC scheme, odd numbers are receptors, even are plugs (the ones with the pin out). In a politically incorrect mnemonics, females are odd, males are even.|
115V or 220V, 10 Amp.
Standard computer power cord. This plug connects to C13.
A power cord would have a plug on it (left picture).
Counterpart of C13.
Standard computer power supply AC inlet socket, or for cord in new cabinet
power distribution bar.
The back panel of equipment would have a socket/receptacle/inlet on it
|IEC C15||Slightly diff than C13 in that it has a notch. e.g. used by HP-UX rack servers. This one can plug into C14, but specific C16 socket require this plug connector.|
|IEC C16||Socket for C15.|
|IEC C19||Typically used in large servers and chassis for modular/blade server|
|IEC C20||Male counterpart of C19|
|Table 3: Other computer plugs.|
|IEC C5 and IEC C6||Compact 3 plonges connector. e.g. Dell laptop power supply AC input|
|IEC C7 and IEC C8||Compact 2 plonges connector. e.g. Dell laptop power supply AC input.|
|Table 2: Misc.|
|Sun DB25 serial to RJ45 console port wiring