JVC VN-E4U 4-ch network encoder vs Plustek NVR 4000

Comparison of VN-E4U 4-ch network encoder, NVR 4000

12 specifications	A JVC VN-E4U 4-ch network encoderView product	B Plustek NVR 4000View product
Performanceidentical
Built-in processorKnown for one	—Unknown — not stated by the source	ARM 9
Internal memoryKnown for one	—Unknown — not stated by the source	64 MB
Flash memoryKnown for one	—Unknown — not stated by the source	8 MB
Compatible operating systemsKnown for one	—Unknown — not stated by the source	Linux
ResolutionKnown for one	640 x 480 pixels	—Unknown — not stated by the source
Network1 differ
Supported network protocolsDiffers	NAT/IP	TCP / IP, HTTP, UPnP, SNTP, DHCP server / Fixed IP, DHCP Client / PPPoE / Fixed, TETP, CLI, SMTP, FTP Clint / server, DDNS
Ports & interfaces1 differ
I/O terminal portsDiffers	4	5
Power1 differ
Power requirementsDiffers	DC 5 V	12VDC
Weight & dimensionsidentical
Dimensions (WxDxH)Known for one	—Unknown — not stated by the source	300 x 152 x 44 mm
Videoidentical
Motion JPEG frame rateKnown for one	30 fps	—Unknown — not stated by the source
Video compression formatsKnown for one	M-JPEG	—Unknown — not stated by the source
Technical detailsidentical
I/O portsKnown for one	RS-485/RS-422C	—Unknown — not stated by the source

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.