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Check PCI-E speed

lspci |grep SAS
lspci -s 04:00.0 -vvnn|grep Speed
		LnkCap:	Port #0, Speed 8GT/s, Width x8, ASPM not supported
		LnkSta:	Speed 8GT/s (ok), Width x8 (ok)
		LnkCap2: Supported Link Speeds: 2.5-8GT/s, Crosslink- Retimer- 2Retimers- DRS-
		LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
lspci |grep 10G
lspci -s 81:00.0 -vvnn|grep Speed
		LnkCap:	Port #0, Speed 5GT/s, Width x8, ASPM L0s L1, Exit Latency L0s <2us, L1 <16us
		LnkSta:	Speed 5GT/s (ok), Width x8 (ok)
		LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
lspci |grep VGA
lspci -s 07:00.0 -vvnn|grep Speed
		LnkCap:	Port #0, Speed 8GT/s, Width x16, ASPM L1, Exit Latency L1 <1us
		LnkSta:	Speed 8GT/s (ok), Width x16 (ok)
		LnkCap2: Supported Link Speeds: 2.5-8GT/s, Crosslink- Retimer- 2Retimers- DRS-
		LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
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