Pci Express M.2 Specification Revision 5.0 Version 1.0 Pdf Instant

| Aspect | Detail | |--------|--------| | | 32 GT/s per lane; x4 = ~15.75 GB/s raw bandwidth | | Keying | Same M-key and B+M-key physical design, but tighter electrical tolerances | | Power | Up to 14W sustained; L1.2 substate < 5 mW | | Backward Compatible | Yes, to PCIe 4.0 and 3.0 (electrically and via link negotiation) | | Access | PCI-SIG members only; not a public PDF |

The physical "gold fingers" on an M.2 SSD have changed subtly. Rev 5.0 v1.0 revises the to reduce stub resonance. It also redefines the reference impedance from 85-ohm nominal to a tighter 85-ohm +/- 5% tolerance across the entire mating cycle. pci express m.2 specification revision 5.0 version 1.0 pdf

The pad finish requirement has changed from standard ENIG (Electroless Nickel Immersion Gold) to to support the higher insertion cycles required for enterprise PCIe 5.0 drives. | Aspect | Detail | |--------|--------| | |

| Supply rail | M.2 Rev 4.0 | M.2 Rev 5.0 v1.0 | |-------------|-------------|-------------------| | 3.3V (pins 74, 72, 4, 2) | 2.5A max | (9.9W) | | 3.3Vaux (pin 71) | 0.5A | 0.5A (unchanged) | The pad finish requirement has changed from standard