Here ya go. Supported write speeds from 0658 firmware:

```
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+R/W Media Codes (87)
--------------------------------------------------------------------------------
/001/00 [2.4x, 4x]
AML /001/00 [2.4x, 4x]
AML /002/00 [2.4x, 4x]
BEALL P0/001/00 [1x, 2.4x]
BeAll000/P40/00 [2.4x, 4x]
CMC MAG /E01/00 [4x, 6x, 8x]
CMC MAG /F01/00 [2.4x, 4x]
CMC MAG /F01/01 [4x, 6x, 8x]
CMC MAG /R01/00 [1x, 2.4x]
CMC MAG /W01/00 [1x, 2.4x]
CMC MAG /W02/00 [2.4x, 4x]
DATATRAK/001/00 [1x, 2.4x]
DAXON /AZ1/01 [4x, 6x, 8x]
DAXON /AZ2/00 [4x, 6x, 8x]
DAXON /D42/00 [2.4x, 4x]
DDDessau/V20/00 [2.4x, 4x]
DDDessau/V30/00 [4x, 6x, 8x]
DT-D02 /02 /00 [2.4x, 4x]
DT-D03 /004/00 [4x, 6x, 8x]
GSC502 /002/00 [2.4x, 4x]
GSC503 /H01/00 [4x, 6x, 8x]
INFODISC/A01/01 [1x, 2.4x]
INFODISC/A10/01 [2.4x, 4x]
INFODISC/R10/02 [2.4x, 4x]
INFODISC/R20/00 [4x, 6x, 8x]
INFOME /R20/00 [4x, 6x, 8x]
LD /001/00 [1x, 2.4x]
LD /S03/00 [4x, 6x, 8x]
LONGTEN /002/00 [2.4x, 4x]
MAXELL /002/00 [4x, 6x, 8x]
MBIPG101/R03/00 [2.4x, 4x]
MBIPG101/R04/01 [4x, 6x, 8x]
MBIPG101/W03/00 [1x, 2.4x]
MCC /001/00 [1x, 2.4x]
MCC /002/00 [2.4x, 4x]
MCC /003/00 [4x, 6x, 8x]
MCC /A01/00 [1x, 2.4x]
MEDIA ID/001/00 [2.4x, 4x]
MKM /A02/00 [2.4x, 4x]
MPOMEDIA/001/00 [2.4x, 4x]
MPOMEDIA/040/00 [2.4x, 4x]
MPOMEDIA/080/00 [4x, 6x, 8x]
MUST /002/01 [4x, 6x, 8x]
MUST 002/ /00 [2.4x, 4x]
NANYA /CHX/00 [4x, 6x, 8x]
NANYA /DR /00 [1x, 2.4x]
NANYA /DRW/00 [2.4x, 4x]
NANYA /RJB/00 [2.4x, 4x]
NANYASC /DRW/01 [1x, 2.4x]
OPTODISC/OP1/00 [1x, 2.4x]
OPTODISC/OP1/01 [1x, 2.4x]
OPTODISC/OP2/00 [1x, 2.4x]
OPTODISC/OP4/01 [2.4x, 4x]
OPTODISC/OR4/00 [2.4x, 4x]
PHILIPS /001/31 [1x, 2.4x]
PHILIPS /010/01 [1x, 2.4x]
PHILIPS /041/00 [2.4x, 4x]
Philips /081/00 [4x, 6x, 8x]
PHILIPS /C08/00 [4x, 6x, 8x]
POMSA001/0R /00 [2.4x, 4x]
POMSC001/002/00 [2.4x, 4x]
PRODISC /R01/00 [2.4x, 4x]
PRODISC /R01/01 [1x, 2.4x]
PRODISC /R02/00 [2.4x, 4x]
PRODISC /R03/03 [4x, 6x, 8x]
PRODISC /W01/00 [1x, 2.4x]
PRODISC /W02/00 [2.4x, 4x]
RICOHJPN/R00/01 [1x, 2.4x]
RICOHJPN/R01/02 [2.4x, 4x]
RICOHJPN/R02/03 [4x, 6x, 8x]
RICOHJPN/W01/01 [1x, 2.4x]
RICOHJPN/W11/01 [2.4x, 4x]
RITEK /001/01 [1x, 2.4x]
RITEK /004/30 [2.4x, 4x]
RITEK /M02/01 [2.4x, 4x]
RITEK /R01/01 [1x, 2.4x]
RITEK /R02/01 [2.4x, 4x]
RITEK /R03/01 [2.4x, 4x]
RITEK /R03/02 [4x, 6x, 8x]
SENTINEL/W01/00 [1x, 2.4x]
SENTINEL/W02/00 [2.4x, 4x]
SKYMEDIA/R01/00 [1x, 2.4x]
SONY /D01/00 [2.4x, 4x]
SONY /D11/00 [4x, 6x, 8x]
YUDEN000/T01/00 [2.4x, 4x]
YUDEN000/T01/01 [4x, 6x, 8x]
YUDEN000/T02/00 [4x, 6x, 8x]
--------------------------------------------------------------------------------
-R Media Codes (70)
--------------------------------------------------------------------------------
3AM0201 /00 [1x, 2x]
AML /00 [2x, 4x]
AN31 /00 [2x, 4x]
AN32 /00 [2x, 4x]
Auvistar /00 [1x, 2x]
BeAll G00001/00 [1x, 2x]
BeAll G40001/00 [4x]
CMC MAG. /00 [1x, 2x]
CMC MAG. AE1/00 [4x]
CMC MAG. AF1/00 [2x, 4x]
DATA TRACK /00 [2x, 4x]
DAXON004 /00 [2x, 4x]
DKM_01 /00 [1x, 2x]
Dvsn /00 [2x, 4x]
Dvsn A001 /00 [2x, 4x]
FORNEX101 /00 [2x, 4x]
FUJIFILM02 /00 [2x, 4x]
GSC001 /00 [2x, 4x]
GSC001 /00 [1x, 2x]
GSC001 /00 [2x, 4x]
GSC002 /00 [4x]
INFODISC-R01/00 [2x, 4x]
LD /00 [1x, 2x]
LD01 /00 [1x, 2x]
LEADDATA01 /00 [2x, 4x]
LONGTEN 001 /00 [2x, 4x]
LONGTEN 009 /00 [2x, 4x]
MAM4XG01 /00 [2x, 4x]
MBI /00 [1x, 2x]
MBI 01RG20 /00 [2x, 4x]
MCC 00RG200 /00 [1x, 2x]
MCC 01RG20 /00 [2x, 4x]
MCC 02RG20 /00 [2x, 4x]
MCI4XG01 /00 [4x]
ME 153 /00 [2x, 4x]
MEI 00V001 /00 [2x, 4x]
MUST 001 /00 [2x, 4x]
MXL RG01 /00 [1x, 2x]
MXL RG02 /00 [2x, 4x]
NANYA P1861 /00 [1x, 2x]
NANYA-JC001 /00 [2x, 4x]
ONIDTECH /00 [2x, 4x]
OPTODISCK00 /00 [2x, 4x]
OPTODISCK001/00 [1x, 2x]
OPTODISCR004/00 [2x, 4x]
POSG04 /00 [2x, 4x]
PRINCO /00 [2x, 4x]
PRINCO /00 [1x, 2x]
PRINCO /00 [1x, 2x]
PRODISCG02 /00 [1x, 2x]
ProdiscS03 /00 [2x, 4x]
PVC001001 /00 [1x, 2x]
PVCR001002 /00 [2x, 4x]
RITEKG03 /00 [1x, 2x]
RITEKG04 /00 [2x, 4x]
RITEKM02 /00 [2x, 4x]
SKC Co.,Ltd./00 [2x, 4x]
SONY /00 [1x, 2x]
SONY04D1 /00 [2x, 4x]
TAIYOYUDEN /00 [1x, 2x]
TAROKO-MX4 /00 [2x, 4x]
TAROKO-X2 /00 [1x, 2x]
TDKG010000d9/00 [1x, 2x]
TDKG02000000/00 [1x, 2x]
TYG01 /00 [2x, 4x]
TYG02 /00 [2x, 4x]
UME01 /00 [4x]
VANGUARD /00 [2x, 4x]
VDSPMSAB 01 /00 [2x, 4x]
Yi Jhan 001 /00 [2x, 4x]
--------------------------------------------------------------------------------
-RW Media Codes (24)
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CMCW02 /00 [1x, 2x]
DAXON_RW2X01/00 [1x, 2x]
JVC/VictorT7/00 [1x]
JVC0VictorD7/00 [2x]
JVC_VictorW7/00 [1x, 2x]
MCC 00RW11N9/00 [1x]
MCC 01RW11n9/00 [1x, 2x]
MCC 01RW4X /00 [2x]
OPTODISCW002/00 [1x, 2x]
OPTODISCW004/00 [2x]
PRINCO /00 [1x, 2x]
PRINCORW0004/00 [2x]
Prodisc DW04/00 [1x, 2x]
ProdiscDVDRW/00 [1x]
PVCW00V00245/00 [1x, 2x]
RITEK000V11A/00 [1x]
RITEK004V11 /00 [1x]
RITEKW01 /00 [1x, 2x]
RITEKW04 /00 [2x]
SONY000000U9/00 [1x]
TDK401saku=3/00 [1x]
TDK501saku]3/00 [1x]
TDK502sakuM3/00 [1x, 2x]
TDK601saku /00 [2x]
```