Plustek nDVR 540 vs Plustek nDVR540

Comparison of nDVR 540, nDVR540

22 specifications	A Plustek nDVR 540View product	B Plustek nDVR540 Model nDVR540 View product
Performanceidentical
Video compression formats	H.264, M-JPEG	H.264, M-JPEG
Video capturing speed	120 fps	120 fps
Analog signal format system	NTSC, PAL	NTSC, PAL
Motion sensor	Yes	Yes
Playback resolutions supported	NTSC: D1 (704x480), CIF(352x240), QCIF(176x120) PAL: D1 (704x576), CIF(352x288), QCIF(176x144)	NTSC: D1 (704x480), CIF(352x240), QCIF(176x120) PAL: D1 (704x576), CIF(352x288), QCIF(176x144)
Certification	CE, FCC, RoHS	CE, FCC, RoHS
Compatible operating systems	Microsoft Windows XP or above	Microsoft Windows XP or above
Ports & interfacesidentical
BNC input ports	4	4
USB 2.0 ports quantity	1	1
RS-485 ports	1	1
Networkidentical
Ethernet LAN (RJ-45) ports	1	1
Ethernet interface type	Gigabit Ethernet	Gigabit Ethernet
Supported network protocols	TCP/ IP, DHCP Client, PPPoE, HTTP, DDNS Client, NTP, FTP, DNS, SMTP, UDP, RTP (TCP, UDP/ uncast), UPnP, IPv4	TCP/ IP, DHCP Client, PPPoE, HTTP, DDNS Client, NTP, FTP, DNS, SMTP, UDP, RTP (TCP, UDP/ uncast), UPnP, IPv4
Hard driveidentical
Number of HDDs supported	1	1
HDD interface	Serial ATA	Serial ATA
HDD capacityKnown for one	—Unknown — not stated by the source	500 GB
HDD size	2.5"	2.5"
Power1 differ
Power requirementsDiffers	12 Vdc/ 1.5 A, input: 8 ~ 16 Vdc	8 ~ 16 Vdc, 1.5 A
Weight & dimensionsidentical
Dimensions (WxDxH)	152 x 170 x 43 mm	152 x 170 x 43 mm
Weight	900 g	900 g
Operational conditionsidentical
Operating relative humidity (H-H)	20 - 80%	20 - 80%
Operating temperature (T-T)	-20 - 65 °C	-20 - 65 °C

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.