BenQ 1655 in Prolific Chipset Enclosure Cannot Rip DVD

I have the BenQ 1655 in a Plumax external enclosure with the Prolific chipset. This one here.

It’s connected to my laptop computer via USB directly (no hub). (I don’t have a 4-pin 6-pin FireWire cable.)

Everything works fine except ripping DVD-Video discs. Both Nero disc copy and DVD-Shrink say I/O Error. DVD-Decrypter (both ISO and File modes) only reads at 0.5x. When I put the same discs in my built-in CD-RW/DVD-ROM, the ripping works fine with all applications.

In fact, I just removed the drive from a Bytecc enclosure with the ALI chipset. It had no problem ripping. (But it couldn’t run any Nero CDSpeed test).

I have attached some info on my setup. If it’s not enough info, please let me know. Thanks.

Nero InfoTool 3.00

Drive Information

Drive : BENQ DVD LS DW1655
Type : DVD±R/RW DL Recorder
Firmware Version : BCGB
Buffer Size : 2 MB
Date : ?
Serial Number : KWTB511222SC0
Vendor Specific : KWTB511222SC0
Drive Letter : E:
Location : 1:0
Mechanism : Tray
Read Speed : 16.0 , 12.0 , 8.0 , 6.0 , 4.0 X
Write Speed : 16.0 , 12.0 , 8.0 , 4.0 X

Read CD Text : Yes
Return C2 Pointers : No
Read CD-R : Yes
Read CD-RW : Yes
Read DVD-ROM : Yes
Read DVD-RAM : No
Read DVD-R : Yes
Read DVD-RW : Yes
Read DVD+R : Yes
Read DVD+RW : Yes
Read DVD+R DL : Yes
Read BD-ROM : No
Read BD-R : No
Read BD-RE : No
Read Digital Audio : Yes
Read CD+G : Yes
Read VideoCD : Yes

Write CD-R : Yes
Write CD-RW : Yes
Write DVD-R : Yes
Write DVD-RW : Yes
Write DVD-R DL : Yes
Write DVD+R : Yes
Write DVD+RW : Yes
Write DVD+R DL : Yes
Write DVD-RAM : No
Write BD-R : No
Write BD-RE : No
Buffer Underrun Protection : Yes
Mount Rainier : No
Modes : Packet, TAO, DAO, SAO, RAW SAO, RAW DAO, RAW SAO 16, RAW SAO 96, RAW DAO 16, RAW DAO 96

Region Protection Control : RPC II
Region : 1
Changes User : 4
Changes Vendor : 4

Interface Information

Adapter 1

Description : Primary IDE Channel

Description : system32\DRIVERS\atapi.sys
Company : Microsoft Corporation
Version : 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)
Description : IDE/ATAPI Port Driver

Attached Devices
Description : Master: IC25N040ATMR04-0
Type : Disk Drive
DMA : On

Adapter 2

Description : Secondary IDE Channel

Description : system32\DRIVERS\atapi.sys
Company : Microsoft Corporation
Version : 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)
Description : IDE/ATAPI Port Driver

Attached Devices
Description : Master: TOSHIBA DVD-ROM SD-R2412
Type : CD-Rom Drive
DMA : Off
Autorun : On

Adapter 3

Description : Intel® 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD

Description : system32\DRIVERS\usbehci.sys
Company : Microsoft Corporation
Version : 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)
Description : EHCI eUSB Miniport Driver

Attached Devices
Description : BENQ DVD LS DW1655 USB Device
Type : CD-Rom Drive
Autorun : On

Hardware Information

Bus Speed : 18059 MHz
Motherboard : n/a n/a
System :
Memory : 758 MB
Sound : SigmaTel Audio
Video : Intel® 82852/82855 GM/GME Graphics Controller

ASPI Information

System ASPI : ASPI file(s) are missing

wnaspi32.dll : 4.71 (0002) 45056 bytes July 17, 2002

Nero ASPI : ASPI is installed and working properly

WNASPI32.DLL : 164112 bytes October 26, 2004

You need to update the firmware on the enclosure.

Have a read of

My PL-3507C chipset enclosure with DW1650 also limited at 12X speed, already update to 2005.11.28.148 firmware.

Your burst rate is 18 so 12X is all you get. Maybe when external firmware comes out you might get higher burst rate to burn @ 16X. Is the drive set to master while in the enclosure?

DW1650 set to master in the enclosure.

Thanks! Firmware update to the enclosure did the trick. Ripping with DVD-Decrypter now hits 13x. :slight_smile:

Yes, I have read on this forum beforehand that my setup was only going to hit 12x. But I wanted a good burner with LightScribe. I’m happy with 12x. Besides, it seems like many 16x-rated media burn best at 12x anyhow.

How do I go about setting the drive to master in the enclosure? What’s the advantage?

I would also like to see a good “in depth” technical explanation about that… :bigsmile:

Well, there is no real in depth Master evaluation. They just don’t work if they are set to slave. They are at the end of the cable, so the pin on the back of the drive must correspond to the Master setting. As simple as that.

End of what cable? (Drive is in enclosure here.)

[I]Sorry for off topic.[/I]

Yeah, you say so, but I haven’t experiensed that. My NEC ND-3500 work perfectly when set to slave in enclosure. I’m asking once again; why?

Never mind.

Hello pinto2…You know i never tried to set mine to slave, i’ve always set mine to master cause i read it here or somewhere to do that :stuck_out_tongue: but cannot find the post though. Maybe it’s just with BenQ’s i don’t remember.

I don’t wan’t to hijack this thread, better just post a new thread here.


Hi, sorry for posting the questionn here, but I have burning problems and don’t know how to set my DW 1650 in External Enclosure to Master setting. Can you help me?

Please don’t crosspost Szadzik!

Picture originally posted by zebadee.