u/Apachez — reddlx

Does Kingston DC2000B M.2 2280 NVMe storage supports ASPM and what are the defined powerstates?

That is output of:

The parts with the drives:

lspci -vv | awk '/ASPM/{print $0}' RS= | grep --color -P '(^[a-z0-9:.]+|ASPM )'

Along with:

The part of "Supported Power States":

smartctl -a /dev/nvme0

For example here are the output for Micron 7450 MAX 800GB M.2 2280 NVMe drives:

01:00.0 Non-Volatile memory controller: Micron Technology Inc 7450 MAX NVMe SSD (rev 01) (prog-if 02 [NVM Express])
            LnkCap:	Port #0, Speed 16GT/s, Width x4, ASPM L0s L1, Exit Latency L0s &lt;256ns, L1 unlimited
            LnkCtl:	ASPM Disabled; RCB 64 bytes, LnkDisable- CommClk+

06:00.0 Non-Volatile memory controller: Micron Technology Inc 7450 MAX NVMe SSD (rev 01) (prog-if 02 [NVM Express])
            LnkCap:	Port #0, Speed 16GT/s, Width x4, ASPM L0s L1, Exit Latency L0s &lt;256ns, L1 unlimited
            LnkCtl:	ASPM Disabled; RCB 64 bytes, LnkDisable- CommClk+

Supported Power States
St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
 0 +     8.25W       -        -    0  0  0  0        0       0
 1 +     7.00W       -        -    1  1  1  1        0       0
 2 +     6.00W       -        -    2  2  2  2        0       0
 3 +     5.00W       -        -    3  3  3  3        0       0
 4 +     4.00W       -        -    4  4  4  4        0       0

So it seems that Micron 7450 MAX doesnt support ASPM meaning if you want them to run cooler you need to manually adjust the powerstate statically.