Parameter Specification:
Adapter Cable Length: about 6.6FT / 200CM
Adapter Input:100-240v 50/60HZ
Adapter Output:19V 2.1A
DC Port Size: 6.5mm x 4.4mm
3 Replacement Plug Size: 4.8 x 1.7mm, 6.0 x 4.4mm, 6.3 x 3.0mm
DC Plug Polarity: inner Positive(+), outer Negative(-).

What You Get:
19v 2.1A Universal power adapter x 1, Replaceable Plug x 3.

If you're looking for a power cord to replace your original Bluetooth Speaker charging cable, try this, the 19V DC Adapter Power Cord Compatible for Harmon Kardon Onyx Studio.
Compatible with the following models, please confirm that your device model is listed in the list:

Fit for Harman Kardon Onyx Studio 1 2 3 4 5 6 7 8 Wireless Bluetooth Speake

Fit for Onyx Studio 1: HKONYXSTUDIOG1; HKONYXSTUDIOJN

Fit for Onyx Studio 2: ONYXSTUDIO2BLKUS

Fit for Onyx Studio 3: ONYXSTUDIO3R, HKONYXSTUDIO3BLKUS, ONYXSTUDIO3REDG1, ONYXSTUDIO3K, ONYXSTUDIO3BLUEG1, HKONYXSTUDIO3BLKAM

Fit for Onyx Studio 4: HKOS4BLKAM,HKOS4BLUAM, HKOS4WHTAM, HKOS4BLKBSG, HKOS4BLKEU, HKOS4WHTBSG, HKOS4BLUBSG

Fit for Onyx Studio 5: HKOS5BLKAM, HKOS5BLUAM, HKOS5GRYAM

Fit for Onyx Studio 6: HKOS6BLKAM, HKOSBLUAM, HKOS6, HKOS6GKYAM;HKONYXS2BLKJK

Fit for Onyx Studio 7: HKOS7BLKAM

Perfect Replacement fit for Acer Monitor R240HY S200HL S200HQ S200HQL S220HQL S236HL S240HL S241HL S242HL S271HL S275HL SB220Q S230HL S231HL S232HL S202HL FT200HQL G236HL G246HL G276HL G206HL G206HQL G226HQL G226HQLBBD G227HQL G237HL G246HYL G247HL G247HYL G257HL G257HU G277HL GN246HL H236HL H274HL H226HQL H257HU H276HL H277H H277HK HN274H.

Compatible with for Acer 19065G ADP-40KD BB ADP-40PH BB ADS-40SG-19-3 19025G ADS-40SG-19-3 19030G ADS-40SG-19-3 19040G ADS-65AL-19-3 ADS-65AL-19-3 19065G DA-40A19 PA-1051-91.

After-sales guarantee: Our products have passed rigorous testing and can be purchased with confidence. If you have any question or need any help while using this, please feel free to contact us directly.