[外置硬碟] G Drive Mobile 4T 係 PMR or SMR?

我星期日買了G Drive Mobile 4T,
用Crystal Disk Info check 係WDC WD40NMZW-59GX6S1 USB3.0 5400RPM

Sequential Read (Q= 32,T= 1) : 128.035 MB/s
Sequential Write (Q= 32,T= 1) : 121.735 MB/s
Random Read 4KiB (Q= 32,T= 1) : 0.579 MB/s [ 141.4 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 0.263 MB/s [ 64.2 IOPS]
Sequential Read (T= 1) : 130.654 MB/s
Sequential Write (T= 1) : 115.756 MB/s
Random Read 4KiB (Q= 1,T= 1) : 0.505 MB/s [ 123.3 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 0.276 MB/s [ 67.4 IOPS]

請問此HDD 係PMR or SMR?
謝謝.