diff --git a/jd2xx/jd2xx/JD2XXInputStream.java b/jd2xx/jd2xx/JD2XXInputStream.java
index 3181c52..e6c243c 100644
--- a/jd2xx/jd2xx/JD2XXInputStream.java
+++ b/jd2xx/jd2xx/JD2XXInputStream.java
@@ -66,4 +66,9 @@ public int read() throws IOException {
 	public int read(byte[] b) throws IOException {
 		return jd2xx.read(b);
 	}
+
+	public int available() throws IOException {
+		return jd2xx.getQueueStatus();
+	}
+
 }