Index: uspace/lib/usb/include/usb/classes/hub.h
===================================================================
--- uspace/lib/usb/include/usb/classes/hub.h	(revision 534dee8970d14d307929fe57efff552ec30e74c2)
+++ uspace/lib/usb/include/usb/classes/hub.h	(revision ba4a03a5128c12a813b86aec7796e57c21dffead)
@@ -76,5 +76,5 @@
 	/** Characteristics bitmask.
 	 *
-	 *  D1...D0: Logical Power Switching Mode
+	 *  D1..D0: Logical Power Switching Mode
 	 *  00: Ganged power switching (all ports power at
 	 *  once)
@@ -85,5 +85,5 @@
 	 *  0: Hub is not part of a compound device
 	 *  1: Hub is part of a compound device
-	 *  D4...D3: Over-current Protection Mode
+	 *  D4..D3: Over-current Protection Mode
 	 *  00: Global Over-current Protection. The hub
 	 *  reports over-current as a summation of all
@@ -96,5 +96,13 @@
 	 *  allowed only for bus-powered hubs that do not
 	 *  implement over-current protection.
-	 *  D15...D5: Reserved
+	 *  D6..D5: TT think time
+	 *  00: At most 8 FS bit times
+	 *  01: At most 16 FS bit times
+	 *  10: At most 24 FS bit times
+	 *  11: At most 32 FS bit times
+	 *  D7: Port indicators
+	 *  0: Not supported
+	 *  1: Supported
+	 *  D15...D8: Reserved
 	 */
 	uint8_t characteristics;
@@ -104,4 +112,7 @@
 #define HUB_CHAR_OC_PER_PORT_FLAG       (1 << 3)
 #define HUB_CHAR_NO_OC_FLAG             (1 << 4)
+#define HUB_CHAR_TT_THINK_16            (1 << 5)
+#define HUB_CHAR_TT_THINK_8             (1 << 6)
+#define HUB_CHAR_INDICATORS_FLAG        (1 << 7)
 
 	/** Unused part of characteristics field */