This is an old revision of this page, as edited by
icarolongo at
05:04, 2 November 2013. It may differ significantly from the
Current revision.
model: Deskjet 3840(model id: 1261)
subtype (laser, inkjet, ..):
inkjet
VendorID:ProductID code of the device:
03f0:7504
year of commercialization:
2004
tested on:
Trisquel 6.0 Toutatis
tested with the following kernel libre:
3.2.0-54-generic
compatibility with free software:
A-Full 
does it adopt any techniques to track users?
not-specified
free driver used:
1.5.0-8ubuntu7.3
Description:
Bus 001 Device 007: ID 03f0:7504 Hewlett-Packard Printing Support
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x03f0 Hewlett-Packard
idProduct 0x7504 Printing Support
bcdDevice 1.00
iManufacturer 1 HP
iProduct 2 Deskjet 3840
iSerial 3 BR67T2H11T040R
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 7 Printer
bInterfaceSubClass 1 Printer
bInterfaceProtocol 2 Bidirectional
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0001
Self Powered
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