#define USB_STRING_DESCRIPTOR_TYPE             3
#define    MANUF_STRING    L"Sonycman Production"
#define    PROD_STRING        L"Sonycman Mass Storage Drive"
#define    SERIAL_STRING    L"123456789ABC"

typedef __packed struct
{
    byte    length;
    byte    descriptor_type;
    word    languageID;
} USB_STRING_ID_DESCRIPTOR;

typedef __packed struct
{
    byte    length;
    byte    descriptor_type;
    wchar_t    text[sizeof(MANUF_STRING)/2];
} USB_STRING1_DESCRIPTOR;

typedef __packed struct
{
    byte    length;
    byte    descriptor_type;
    wchar_t    text[sizeof(PROD_STRING)/2];
} USB_STRING2_DESCRIPTOR;

typedef __packed struct
{
    byte    length;
    byte    descriptor_type;
    wchar_t    text[sizeof(SERIAL_STRING)/2];
} USB_STRING3_DESCRIPTOR;

typedef __packed struct
{
    USB_STRING_ID_DESCRIPTOR    s0;
    USB_STRING1_DESCRIPTOR        s1;
    USB_STRING2_DESCRIPTOR        s2;
    USB_STRING3_DESCRIPTOR        s3;
} USB_STRING_DESCRIPTOR;

const    USB_STRING_DESCRIPTOR    CUSB::strings = {
    sizeof(USB_STRING_ID_DESCRIPTOR),
    USB_STRING_DESCRIPTOR_TYPE,
    0x409,                                //language ID
    sizeof(USB_STRING1_DESCRIPTOR),
    USB_STRING_DESCRIPTOR_TYPE,
    MANUF_STRING,
    sizeof(USB_STRING2_DESCRIPTOR),
    USB_STRING_DESCRIPTOR_TYPE,
    PROD_STRING,
    sizeof(USB_STRING3_DESCRIPTOR),
    USB_STRING_DESCRIPTOR_TYPE,
    SERIAL_STRING
};

53 00 6f 00 6e 00...

0x0000a4c4  04 03 09 04 2A 03 53 00 6F 00 6E 00 79 00 63 00 ....*.S.o.n.y.c.
0x0000a4d4  6D 00 61 00 6E 00 20 00 50 00 72 00 6F 00 64 00 m.a.n. .P.r.o.d.