PartsTable
Technical Data Sheet
M491 ✓ Verified by PartsTable
NEC · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

Create pixel-perfect imagery with the high-end panel quality of the fully professional NEC M Series large format displays. By focusing on customer needs while also offering professional reliability, the M series displays give customers a digital signage display lineup without all the costs. The M series can support both landscape and portrait orientations while also allowing the modularity possibilities to customize their needs dependent on their application and use.

The new series contain a full metal mechanical chassis, allowing for a more robust design necessary for commercial applications while maintaining the attractive aesthetics that allow the focus of onlookers to be on what matters – the message. Simple and targeted connectivity options allow customers to have the up-to-date options that they need while not having to overpay for excess and unused interfaces. The NEC M series boasts 500 cd/m² brightness which is ideal for a majority of digital signage applications in corporate, This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-021-6314, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
M491
NSN: 5930-00-021-6314
FSC: 5930
CAGE: 13445 — COLE HERSEE COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSQUARE
nut_height0.310 INCHES MINIMUM AND 0.346 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.606 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch16
nondefinitive_spec/std_dataB-2 TYPE
NSN5930-00-021-6314
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: NEC SWITCH TITLE COMPONENT PN M491 MFR NEC SWITCH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
50-2L3Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPEB2Interchangeable
interchangeable cross-reference
interchangeable
M491Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M491?
M491 is a SWITCH manufactured by NEC.
What parts can replace M491?
There are 3 known substitutes for M491: 50-2L3, FFB571TYPEB2, M491. Substitute compatibility should be verified for your specific system.
What is the NSN for M491?
M491 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-021-6314. This indicates validated use in U.S. government and defense supply chains.
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