Oki B721 Maintenance Manual

Oki Data CONFIDENTIAL
45487001TH Rev.1
1-8 /
1. Configuration
1.5 Interface specifications
1.5.1 USB interface specications
1.5.1.1 USB interface overview
(1) Basic specications
USB (Hi-Speed USB supported)
(2) Transmission mode
Full speed (Max. 12 Mbps ± 0.25%)
High speed (Max. 480 Mbps ± 0.05%)
(3) Power control
Self-powered device
1.5.1.2 USB interface connectors and cables
(1) Connector
• Printer side: B-receptacle (female)
Upstream port
UBB-4R-D14C-4D(LF)SN (JST Mfg. Co.,Ltd) or equivalent
Connector pin arrangement
(2) Cables
Length: USB 2.0 cables no more than five meters long (two meters or less
recommended)
(Shielded USB 2.0 cables shall be used.)
1.5.1.3 USB interface signals
Signal name Function
1 Vbus Power (+5V)
2 D- For data transfer
3 D+ For data transfer
4 GND Signal ground
Shell Shield
• Cable side: B-plug (male)
2
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Oki B721 Specifications

General

Print Technology	LED
Resolution	1200 x 1200 dpi
Processor	533 MHz
Memory	256 MB
Connectivity	USB, Ethernet
Duplex Printing	Standard