diff --git a/api.cpp b/api.cpp
index 4acead3..95e9790 100644
--- a/api.cpp
+++ b/api.cpp
@@ -207,6 +207,16 @@ static char *getsummary(char *params)
 	return buffer;
 }
 
+/**
+ * Returns current pool infos
+ */
+static char *getpoolnfo(char *params)
+{
+	char *p = buffer;
+	*p = '\0';
+	return p;
+}
+
 /*****************************************************************************/
 
 static void gpuhwinfos(int gpu_id)
@@ -233,7 +243,6 @@ static void gpuhwinfos(int gpu_id)
 	cgpu->gpu_fan = gpu_fanpercent(cgpu);
 	cgpu->gpu_pstate = gpu_pstate(cgpu);
 	gpu_info(cgpu);
-	gpu_nvids(cgpu);
 #endif
 
 	gpu_clocks(cgpu);
@@ -246,19 +255,28 @@ static void gpuhwinfos(int gpu_id)
 
 	snprintf(buf, sizeof(buf), "GPU=%d;BUS=%hd;CARD=%s;MEM=%lu;"
 		"TEMP=%.1f;FAN=%d;FREQ=%d;MEMFREQ=%d;PST=%s;"
-		"VID=%hx;PID=%hx;NVML=%d;NVAPI=%d;DRIVER=%s;BIOS=%s|",
+		"VID=%hx;PID=%hx;NVML=%d;NVAPI=%d;SN=%s;BIOS=%s|",
 		gpu_id, cgpu->gpu_bus, card, cgpu->gpu_mem,
 		cgpu->gpu_temp, cgpu->gpu_fan, cgpu->gpu_clock, cgpu->gpu_memclock,
 		pstate, cgpu->gpu_vid, cgpu->gpu_pid, cgpu->nvml_id, cgpu->nvapi_id,
-		driver_version, cgpu->gpu_desc);
+		cgpu->gpu_sn, cgpu->gpu_desc);
 
 	strcat(buffer, buf);
 }
 
+static const char* os_name()
+{
+#ifdef WIN32
+	return "windows";
+#else
+	return "linux";
+#endif
+}
+
 /**
- * CPU Infos
+ * System and CPU Infos
  */
-static void cpuhwinfos()
+static void syshwinfos()
 {
 	char buf[256];
 
@@ -266,8 +284,8 @@ static void cpuhwinfos()
 	uint32_t clock = cpu_clock(0);
 
 	memset(buf, 0, sizeof(buf));
-	snprintf(buf, sizeof(buf), "CPUS=%d;TEMP=%.1f;FREQ=%d|",
-		num_cpus, temp, clock);
+	snprintf(buf, sizeof(buf), "OS=%s;NVDRIVER=%s;CPUS=%d;CPUTEMP=%.1f;CPUFREQ=%d|",
+		os_name(), driver_version, num_cpus, temp, clock);
 	strcat(buffer, buf);
 }
 
@@ -279,10 +297,12 @@ static char *gethwinfos(char *params)
 	*buffer = '\0';
 	for (int i = 0; i < cuda_num_devices(); i++)
 		gpuhwinfos(i);
-	cpuhwinfos();
+	syshwinfos();
 	return buffer;
 }
 
+/*****************************************************************************/
+
 /**
  * Returns the last 50 scans stats
  * optional param thread id (default all)
@@ -342,6 +362,8 @@ static char *getmeminfo(char *params)
 	return buffer;
 }
 
+/*****************************************************************************/
+
 static char *gethelp(char *params);
 struct CMDS {
 	const char *name;
@@ -349,10 +371,11 @@ struct CMDS {
 } cmds[] = {
 	{ "summary", getsummary },
 	{ "threads", getthreads },
+	{ "pool",    getpoolnfo },
 	{ "histo",   gethistory },
-	{ "scanlog", getscanlog },
-	{ "meminfo", getmeminfo },
 	{ "hwinfo",  gethwinfos },
+	{ "meminfo", getmeminfo },
+	{ "scanlog", getscanlog },
 	/* keep it the last */
 	{ "help",    gethelp },
 };
diff --git a/miner.h b/miner.h
index b432f87..7e5a351 100644
--- a/miner.h
+++ b/miner.h
@@ -391,6 +391,7 @@ struct cgpu_info {
 	int8_t nvml_id;
 	int8_t nvapi_id;
 
+	char gpu_sn[64];
 	char gpu_desc[64];
 };
 
diff --git a/nvml.cpp b/nvml.cpp
index eda0068..4c1baaf 100644
--- a/nvml.cpp
+++ b/nvml.cpp
@@ -137,6 +137,8 @@ wrap_nvml_handle * wrap_nvml_create()
 		wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetFanSpeed");
 	nvmlh->nvmlDeviceGetPerformanceState = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, int *))
 		wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetPowerUsage");
+	nvmlh->nvmlDeviceGetSerial = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, char *, unsigned int))
+		wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetSerial");
 	nvmlh->nvmlDeviceGetUUID = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, char *, unsigned int))
 		wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetUUID");
 	nvmlh->nvmlDeviceGetVbiosVersion = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, char *, unsigned int))
@@ -332,24 +334,41 @@ int wrap_nvml_get_busid(wrap_nvml_handle *nvmlh, int cudaindex, int *busid)
 	return 0;
 }
 
-int wrap_nvml_get_desc(wrap_nvml_handle *nvmlh, int cudaindex, char *desc, int maxlen)
+int wrap_nvml_get_serial(wrap_nvml_handle *nvmlh, int cudaindex, char *sn, int maxlen)
 {
 	uint32_t subids = 0;
+	char uuid[NVML_DEVICE_UUID_BUFFER_SIZE];
 	int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
+	wrap_nvmlReturn_t res;
 	if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
 		return -1;
 
-#if 0
-	// todo: check if there is vendor id is inside
+	res = nvmlh->nvmlDeviceGetSerial(nvmlh->devs[gpuindex], sn, maxlen);
+	if (res == WRAPNVML_SUCCESS) {
+		return 0;
+	}
+
 	// nvmlDeviceGetUUID: GPU-f2bd642c-369f-5a14-e0b4-0d22dfe9a1fc
-	wrap_nvmlReturn_t res = nvmlh->nvmlDeviceGetUUID(nvmlh->devs[gpuindex], desc, maxlen);
+	// use a part of uuid to generate an unique serial
+	// todo: check if there is vendor id is inside
+	memset(uuid, 0, sizeof(uuid));
+	res = nvmlh->nvmlDeviceGetUUID(nvmlh->devs[gpuindex], uuid, sizeof(uuid)-1);
 	if (res != WRAPNVML_SUCCESS) {
 		if (opt_debug)
 			applog(LOG_DEBUG, "nvmlDeviceGetUUID: %s", nvmlh->nvmlErrorString(res));
-	} else {
-		applog(LOG_DEBUG, "nvml Device UUID: %s", desc);
+		return -1;
 	}
-#endif
+	strncpy(sn, &uuid[4], min((int) strlen(uuid), maxlen));
+	sn[maxlen-1] = '\0';
+	return 0;
+}
+
+int wrap_nvml_get_bios(wrap_nvml_handle *nvmlh, int cudaindex, char *desc, int maxlen)
+{
+	uint32_t subids = 0;
+	int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
+	if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
+		return -1;
 
 	wrap_nvmlReturn_t res = nvmlh->nvmlDeviceGetVbiosVersion(nvmlh->devs[gpuindex], desc, maxlen);
 	if (res != WRAPNVML_SUCCESS) {
@@ -357,8 +376,6 @@ int wrap_nvml_get_desc(wrap_nvml_handle *nvmlh, int cudaindex, char *desc, int m
 			applog(LOG_DEBUG, "nvmlDeviceGetVbiosVersion: %s", nvmlh->nvmlErrorString(res));
 		return -1;
 	}
-		applog(LOG_DEBUG, "nvmlDeviceGetVbiosVersion: %s", desc);
-
 	return 0;
 }
 
@@ -523,7 +540,31 @@ int nvapi_getinfo(unsigned int devNum, uint16_t *vid, uint16_t *pid)
 	return 0;
 }
 
-int nvapi_getdesc(unsigned int devNum, char *desc, unsigned int maxlen)
+int nvapi_getserial(unsigned int devNum, char *serial, unsigned int maxlen)
+{
+//	NvAPI_Status ret;
+	if (devNum >= nvapi_dev_cnt)
+		return -1;
+
+	sprintf(serial, "");
+
+	if (maxlen < 64) // Short String
+		return -1;
+
+#if 0
+	ret = NvAPI_GPU_Get..(phys[devNum], serial);
+	if (ret != NVAPI_OK) {
+		NvAPI_ShortString string;
+		NvAPI_GetErrorMessage(ret, string);
+		if (opt_debug)
+			applog(LOG_DEBUG, "NVAPI ...: %s", string);
+		return -1;
+	}
+#endif
+	return 0;
+}
+
+int nvapi_getbios(unsigned int devNum, char *desc, unsigned int maxlen)
 {
 	NvAPI_Status ret;
 	if (devNum >= nvapi_dev_cnt)
@@ -704,19 +745,6 @@ unsigned int gpu_power(struct cgpu_info *gpu)
 }
 
 int gpu_info(struct cgpu_info *gpu)
-{
-	if (hnvml) {
-		wrap_nvml_get_info(hnvml, gpu->gpu_id, &gpu->gpu_vid, &gpu->gpu_pid);
-		wrap_nvml_get_desc(hnvml, gpu->gpu_id, gpu->gpu_desc, sizeof(gpu->gpu_desc));
-	}
-#ifdef WIN32
-	nvapi_getinfo(nvapi_dev_map[gpu->gpu_id], &gpu->gpu_vid, &gpu->gpu_pid);
-	nvapi_getdesc(nvapi_dev_map[gpu->gpu_id], gpu->gpu_desc, sizeof(gpu->gpu_desc));
-#endif
-	return 0;
-}
-
-int gpu_nvids(struct cgpu_info *gpu)
 {
 	int id = gpu->gpu_id;
 
@@ -726,10 +754,17 @@ int gpu_nvids(struct cgpu_info *gpu)
 	if (id < 0)
 		return -1;
 
-	if (hnvml && id < hnvml->nvml_gpucount)
+	if (hnvml) {
 		gpu->nvml_id = (int8_t) hnvml->cuda_nvml_device_id[id];
+		wrap_nvml_get_info(hnvml, id, &gpu->gpu_vid, &gpu->gpu_pid);
+		wrap_nvml_get_serial(hnvml, id, gpu->gpu_sn, sizeof(gpu->gpu_sn));
+		wrap_nvml_get_bios(hnvml, id, gpu->gpu_desc, sizeof(gpu->gpu_desc));
+	}
 #ifdef WIN32
 	gpu->nvapi_id = (int8_t) nvapi_dev_map[id];
+	nvapi_getinfo(nvapi_dev_map[id], &gpu->gpu_vid, &gpu->gpu_pid);
+	nvapi_getserial(nvapi_dev_map[id], gpu->gpu_sn, sizeof(gpu->gpu_sn));
+	nvapi_getbios(nvapi_dev_map[id], gpu->gpu_desc, sizeof(gpu->gpu_desc));
 #endif
 	return 0;
 }
diff --git a/nvml.h b/nvml.h
index 4169cd6..d89472e 100644
--- a/nvml.h
+++ b/nvml.h
@@ -45,6 +45,10 @@ NVML_CLOCK_SM = 1,
 NVML_CLOCK_MEM = 2
 } wrap_nvmlClockType_t;
 
+#define NVML_DEVICE_SERIAL_BUFFER_SIZE 30
+#define NVML_DEVICE_UUID_BUFFER_SIZE 80
+#define NVML_DEVICE_VBIOS_VERSION_BUFFER_SIZE 32
+
 /*
  * Handle to hold the function pointers for the entry points we need,
  * and the shared library itself.
@@ -71,6 +75,7 @@ typedef struct {
 	wrap_nvmlReturn_t (*nvmlDeviceGetFanSpeed)(wrap_nvmlDevice_t, unsigned int *);
 	wrap_nvmlReturn_t (*nvmlDeviceGetPerformanceState)(wrap_nvmlDevice_t, int *); /* enum */
 	wrap_nvmlReturn_t (*nvmlDeviceGetPowerUsage)(wrap_nvmlDevice_t, unsigned int *);
+	wrap_nvmlReturn_t (*nvmlDeviceGetSerial)(wrap_nvmlDevice_t, char *serial, unsigned int len);
 	wrap_nvmlReturn_t (*nvmlDeviceGetUUID)(wrap_nvmlDevice_t, char *uuid, unsigned int len);
 	wrap_nvmlReturn_t (*nvmlDeviceGetVbiosVersion)(wrap_nvmlDevice_t, char *version, unsigned int len);
 	wrap_nvmlReturn_t (*nvmlSystemGetDriverVersion)(char *version, unsigned int len);
@@ -143,7 +148,7 @@ unsigned int gpu_usage(struct cgpu_info *gpu);
 int gpu_pstate(struct cgpu_info *gpu);
 int gpu_busid(struct cgpu_info *gpu);
 
-int gpu_nvids(struct cgpu_info *gpu);
+/* pid/vid, sn and bios rev */
 int gpu_info(struct cgpu_info *gpu);
 
 #endif